Go out in the world and watch women: something you'll discover, shocking as it is to some here, all women are not alike. Some women love dresses. Some hate them. Some women love shoes, to some women they're just something to protect your feet. Etc. etc.
There is no "purpose"- it looks good, & I like it. Same reason some GG's do these things. And those of us who go out show society we are just folks, nothing to fear or laugh at. Gay people learned this lesson & moved forward.
Let's also be clear: A chauvinistic CD isn't that way because of being a CD. A chauvinistic black man isn't that way because of being black. A chauvinistic American isn't chauvinistic because of their country- etc. etc.