Every man and woman is different. And now with more people calling themselves "homosexual", it's an even HARDER question to answer.

But...in my opinion...or better yet, how I was raised(wether you agree or not)...

Men are strong and dominant. Like a penis really.. LMAO.
Men provide the seed. Men support the women and family. Men protect and serve. Men are simple. Men want to be satisfied. Real men satisfy in return. Men have to know how women think to help them.

Because women, complicate themselves. Since they are so advanced. like a vagina and "birth". It's not just a hole. lmao
women stabilize the home that the men support.
yes, women are strong enough to support as well. infact i think that's sexy. but anyways, women have a mothers touch. they breast-feed the child. women have intuition and men have instincts.

i don't wanna sound all sexist so i think that's enough. pretty interesting question. but like i said above, it's all relative. every person is different.