For whatever reason, I have not been in the habit of writing stories or novels with female protagonists. This has changed in recent years, but especially throughout college, most of my stories were male driven.
For whatever reason, I get along better with, and relate better to, males. Maybe it's because I didn't really have a mother figure? I mean, I had my grandmother, but then I had the whole stepmother issue, and I think that really caused me to withdraw some. Then came things like middle school, high school, and college, and female behavior just causes my hackles to rise a lot of the time.
But. Then I wrote (well, mostly wrote. It's about...a third done?) my first Steampunk novel. Three main female characters. Then I wrote my second Steampunk novel, for a NaNoWriMo and repeated that pattern. Especially in the Steampunk, it's fun for me to write the girls adventuring, I'm not really sure why. The Steampunk novels are also Young Adult, I think, while nothing else I've really written is (well, my first NaNo novel is, about a selkie, but that one would need quite a lot of work to see the light of day I think. Or maybe not. I haven't looked at it again lately.)
I've loosened up, obviously, or matured or whatever. Learn to Howl is in first person, female, as is its sequel. I still mostly have male friends, though, with a few notable exceptions. When playing a video game or tabletop role playing game, my characters are all female. Again, with a few notable exceptions, we don't really do the cross gender thing at our table. The main reason is that it's confusing for the players and storyteller, nothing to do with gender politics really. It's just jarring to the story to consistently use the incorrect pronoun. I'll probably also mostly own female dogs as well, as male dogs are kind of gross. Should we decide to have children, I actually kind of hope for a girl. Again, because boys really are kind of gross (sorry, dudes).
Do you find yourself writing more about one gender or the other? One sex or the other? I've read/heard interesting discussion on sex versus gender, and that's not the argument I'm making here. I'm just curious.