Alright, so, I'm not saying I disagree with you, but it's all about image. As sad as it is, society has placed a standard in which a certain sex must portray in order for them to advance through their daily lives, whether it be through dating or getting a job, etc, etc. So, it's mostly an idea that conforming into a society will mean more people will like you, and therefore, heightening your chance of success. And of course, people want to be successful, and that's where to conformity comes in. There's nothing wrong with wanting to conform, seeing that it could be proven beneficial to one in the long run. People are social creatures, so of course plenty of them will not want to step out of that boundary that has been expected of them because it may cause people to have a lesser opinion of them. But regardless, the idea is still unfair and restricting.
And I'm not saying I will conform to the criteria which has been placed before me. I'm just giving some of my thoughts on the matter... :/
Just some thoughts.....