So that He can masturbate to all the suffering that He's caused?
Just kidding; God's not a sexual sadist[citation needed], He's actually an exhibitionist, and gets off on flashing His privates to His prophets. See Exodus 33:23 (in which God famously moons Moses) and Ezekiel 1:27 and 8:2 (in which Ezekiel actually gets a good look at God's genitals, and describes them as being made of fire, though that just raises further questions).
Well thats funny, but i think God is both Male and Female, so that he can understand human beings very well. Women are kinda to understand and it only take someone of their gender to know how it is being woman.