Men and women are different on the biological level. They are different in multiple ways, but a particular one is that they have a different mix of hormones which affect the brain and so the mind. This gives rise to biologically (NOT socially) determined loci of attraction for certain behaviours and attitudes. Note that biology is not necessarily destiny, but ceteris paribus it's easier for biological males to gravitate to some centers of attraction and for biological females to gravitate towards other centers of attraction. Sure, there are lots of exceptions, but that doesn't change the picture of the averages.