I kept delaying my answer to this thread until I completely forgot it.

I like the idea of the thread by the way, Tsuyoiko san!!
Do you believe there's a purpose to life? Perhaps to try to make the world a better place, to try to understand the workings of the universe or to propagate the species?
No, I don't believe that the universe, life as a whole, or human life have any form of purpose endemic to them. Purpose is a human concept concerning a human trait, and it would only be possible that a general purpose exists at one of the three above cited levels, if a human-like consciousness, serving as a creator, a guide, or both, exists. Since I don't believe that any form of deity exists in or out of the universe, I don't see why there would be any universal scheme following which energy transformations in space-time would be occurring.
Human beings are the only form of existence we know, which has the potential to create purposes, and despite all trials, we are still too segregated to agree on a common goal...
Whether or not you believe that life has an inherent purpose, do you try to live your life with a purpose in mind? Is your life dedicated to something? Is it important to you that your life has some meaning outside of your own desires? Do you live your life with some goal in mind?
Regardless of whether your life has any purpose, what is it that makes your life worth living? Family and friends? Knowledge? Material possessions?
I'm interested in hearing what other people think before sharing my own thoughts
Sure. Like I said, human beings can create purpose. An individual purpose is easier to create and control than a collective one. I have my own which is strictly personal, meaning that I don't preach it or believe that everybody has to follow it in any way.
My purpose is simply to know as much as I can, to construct (i.e. understand and create) as many structures as I can: to study (and possibly create) as many languages and scientific (mathematical especially) theories as my short human life allows. That purpose is what defines the meaning and the utility of each single action I purport, and without it I would probably point a gun at my head and pull the trigger.
Family ties are probably the most absurd thing I ever saw in human relationships; I don't understand them, and I probably won't, ever. Family, for the most part, are just a bunch of pushy people who think they are so "close" that they have the right to meddle with every single one of your affairs. Screw 'em!! They're nothing but a prison to individual freedom of choice. Friendship is interesting though: it's a relationship which involves almost no form of authority, while the platform of mutual respect and interest is much wider than that of family, of which the only Raison d'Etre is some sort of hereditary (and hence authoritative) obligation.
I would certainly dedicate my life for a friend, as long as that does not contradict my primary purpose (remember that we'd only become friends if we share that purpose partially or wholly!!), but for some so-called "close one" just because we "share blood"? Certainly not!!
As for material possessions, again I only want enough to make my objectives achievable, no more and no less.