'We' may have been happy with the idea of two genders, but it didn't represent a significant number of people. Yes, it does create some issues, but the intense focus on those issues (as typified by your jokes about people identifying as aliens and the picture you just posted) rather than just accepting that some people don't see themselves as entirely male or female from an early age is part of the problem. These people nearly always want a quiet life and are asking for nothing more than acceptance of their nonstandard gender, but unfortunately that small request is too much for many people. Now, how about we drop this divisive subject that you chose to bring up? It doesn't belong here.