Sometimes it just feels safer to hide your gender in game when you are female.
I have noticed the last few years getting worse, or that I am just on the wrong realm. That if a guild has a female player in it, once the members find out, their hormones starts to act up. This way I am still more closing up against giving details about me, even if I am still being who I am, I just started to refuse answering questions like what is your realname. (which is commonly asked).
They hardly ask for gender, but that comes because they hardly met a girl in WoW (possibly because some are doing the same as me) I guess.. So everyone is male unless proven otherwise. I have no problem with that, however if I prove otherwise, their hormones starts to act up and not sure what happens in this guild, but it will highly end up like most of my last guilds, being driven away from the guild by pestering.