Why womnen have to be feminine?

Can anyone tell me why a woman has to be nice and gentle?? Why can't we have two sides where we work out stand up for ours selves and out do men in what they do? Why do we have to do the house work and cook? Wear pink, purple, yellow, and other light colors? When we are born why are we already labelled by wearing pink? Why cant we have blue, green, red, black? Does that makes us unatrractive? Makes us lose sex appeal? Why cant we work hard and do what we need to do while being "feminine"? Whats makes us different from men when men needs us? Women, Female, Menstral, etc. All has something deal with a man within a female which proves males need women, but they do not need us to be feminine.