I disagree... I love my wife, but understanding her "feminine thoughts", as she puts it, feels like rocket science. So, yeah, why would I put my self through this in a game? I get from her and my sisters all the time "women think differently than men", I disagree, but it's there.
I'm female, and I don't really know what is meant by "feminine thoughts". But then I'm not very girly...
I will make this observation though:
I've worked in human resources and senior management. It is my job to deal with people and their problems. In my experience (and it is obviously only my experience), people of particular genders, class backgrounds and even ethnic backgrounds do have certain tendencies toward certain personality traits. But 'tendency' is as high I would put it. Knowing someone is, for example, female, does not really help me to understand her problems or predict her actions.
On the other hand, I've found knowing someone's occupation actually really does help me to understand their personality and predict of their actions. Telling me someone is male is not useful at all. But telling me someone is a doctor, a prosecutor, a park ranger, or a maintenance worker? Now that gives me something to work with. It is incredible how many times I have observed patterns of behavior repeat within an occupation group.
Hence, it seems to me that knowing a character is a seeker, a templar, a mercenary, a merchant or a want-to-be-Robin-Hood says much more about who they are then simply saying "man" or "woman".