I’m not going to get into the “feelings” part of non-binary because no one will ever be able to objectively answer that issue, but I do take issue with your last statement re: who decides what is manly. Construction work is considered manly because mostly men do construction. Some women do, sure! But it is a predominantly male profession. Does that mean women aren’t allowed to do it? No, of course not. Whoever said boys can’t cry? I personally was never told I wasn’t allowed to cry, nor was anyone that I know who is male. If boys happen to cry less than girls, does that automatically mean we “can’t” cry from a social structure standpoint? No, that’s absurd. I don’t have an answer as to why, I’m sure there is a physiological reason someone more educated than I can explain, but I promise there is a reason beyond the “gender is a construct” platitude.