Firstly, a apologize if my post was overly aggressive, i see that we appear to be on the same wave length on a lot of these issues in society

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With the benefits problem, i think the problem in the system lies not with too much money being given out, but rather because the system itself is currently very flawed in the sense of benefits been given out way to readily and the system not protecting itself effectively against benefit cheats. A recent news story only proves this;
"Two people have been sentenced after claiming thousands of pounds in benefits for 16 non-existent children.
After his arrest, Wilshaw, a gambling addict with 85 previous convictions for fraud, claimed he had done a public service by exposing the loophole.
He told officers: "It was incredibly easy. Nobody checked up on us until last week."";
BBC NEWS | UK | England | Somerset | Benefit couple faked 16 children
There are so many people cheating the system it is unbelievable and unacceptable.
The only ways to help improve the system in general would be to;
a. People should have to have more proof of situation. The couple who invented 16kids to receive benefits for them did not even have to show birth certificates for their supposed children.
b. When it comes to disability, a full examination needs to be given to really judge how disabled a person is and how much their disability will effect their work prospects.
I believe that there are many people, that while unfortunately disabled, are not completely incapable of doing any work whatsoever. Even if you are paralyzed from the waist down, you still have you arms and hands to work with, so you could still do a sit down job. For example, when i was living in Australia, i helped my aunt out with her video store business by doing jobs like putting thousands of customer news letters into envelopes and sealing them, ready to be sent off- such a job is very boring, but at the end of the day its still work, and work that could be done by almost anyone.
c. For both parents and disabled people claiming benefits, the government should offer work to such people which they are capable of doing. They are so many single mothers with like 2-3 kids which are given a free house and free money, yet they do not work at all. Yet there are enough single mothers in this country that have proven that it is possible to work and have kids (although i'm not denying that it isn't difficult)- kids need a lot of time to raise them, yet even a single parent with a lot of kids will still find time in the day with nothing important to do.
There are too many un-working parents who claim benefits for their kids, even when they are capable of working and have time to work- the government should provide such people with work or community service to help ensure that such people do not simply raise children while paying for their kids with hard working tax payers money, yet do nothing to really actually contribute to society.
For example of such people, the area where i live in is half council estate and half ex-council estate; across the road there is a neighbor of mine, she is a fat lady with 3 kids- she has never worked a day in her life, yet the government still gave her a free council house and child benefits. I see her enough watching tv all day in her sitting room to know that she actually has plenty of time to do some sort of proper work.
We have to many people in society who just breed and don't contribute to society, while they live of the money of hard working tax payers money.
But the question is, what do you do when you have someone who decides not to work and just have kids instead while they do this? Even if they are good enough parents, surely its wrong to simply allow people to abuse the system so they can produce unlimited amounts of children?
Regarding Africa's problems, corruption is so widespread and deep rooted in its societies, there isn't really any hope of things in government getting better unless more heavy handed and straightforward actions are taken.
But it is difficult to do this.
In the case of Zimbabwe, back in the days when it was a thriving and well-fed economy, the majority of the power was held in the hands of white people. It wasn't an unfair system though which made this the case, it was simply the case.
Mugabe convinced the black population of Zimbabwe that they should have everything the white people had, and so the white people were thrown off their farms and destroyed their businesses, the white people had no say in the matter whatsoever and were treated quite brutally.
I suspect the Zimbabwe people that are now moaning about Mugabe (the leader they put into power), were the first to cheer as the white people were removed. But the fact that the people of Zimbabwe are now starving and have the lowest life expectancy in the world now, shows that far from being their enemy, the white people were lynchpin that made their 4th world country the once prosperous land it was. The Nazis blamed the Jews, Mugabe blames the whites, no difference. Back in the '60s and 70s They had 90% employment, full shops, food and the largest black middle class in ALL Africa- once Mugabe and his people kicked all the whites out, Zimbabwe went downhill from there onwards.
So the question is, how much should we actually try to help out countries like Zimbabwe's problems considering that they kicked us out (in a less than kind or fair manner) and replaced us with the leader that now torments them?
I don't really think that the generation of children that were brought up under Mugabe's regime and who have experienced some of the worst of it, will really turn the country back into the one that is was before when white people were welcome in it, because unfortunately despite how badly Mugabe has treated the country, many of the black population in Zimbabwe still believe Mugabe's propaganda that it was the whites that made their country so bad. I guess it is not dissimilar to how many of the north Koreans believe that it is people like the Americans that make their country so bad, even though its obvious to us that its their rulers that make the country the way it is.
But we can't really step in and properly help out a country like Zimbabwe because it was them who kicked us out, and despite the fact that we could really help them, we have no moral obligation too and our help wouldn't be entirely welcomed anyway.
Considering that with the way things look right now, we can't really effectively help the people of Zimbabwe out and nor can they for themselves, i don't think their population increasing is really going to help things either. But i do still think that population control would at least be a good step in the right direction to at least helping reduce the strain of their dire poverty that exists across so much of the country and which blights so many people in their population. Even if it doesn't solve their governments problems, once the people reduce their poverty problems they at least will be in more of a good position to help themselves

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Less people=less mouths to feed. The government in Zimbabwe can currently treat the people as bad as it wants because life is cheap in Zimbabwe (with an endless supply of people being born) and because the army will always remain well-fed and well-paid (so it is unlikely to rebel against the government and join the poor in their fight against the government). The system is almost medieval in its control over the people.
But reduce the population by imposing child polices (and thus reduce the poverty of couples), people from poor backgrounds will start to have more say and more power in what happens, the wealthier and the less expendable you are, the more your voice will be listened to. Even if government corruption is never sorted, at least people will have a better quality of life if they have more food and money to depend on (because its be shared around less people).