Depends on the game, games like trickster/pangya I play chicks.. a lot, but in games where gender doesn't make a difference and it's pre-set I'm always a guy
"This is how it works: you're young until you're not, you love until you don't, you try until you can't,
you laugh until you cry, you cry until you laugh, and everyone must breathe until their dying breath." tumblr / instagram
In TO I have mostly girls because gender makes a difference and the females happen to have to skills, etc that I like. And my lion. But where gender makes no difference 99% of the time I will choose female... mostly based off cuteness :v
1. Which class looks better. In TO, I've played both genders. Only in Atlantica did I choose a male char because the girls looked crap.
2. What IGN I'm using. I have several IGNs that I use on rotation, so if it's a male/female one in particular, then obviously I go with the appropriate choice o_o
Those are pretty much the only 2 factors I consider xD
Well, I do play my own gender (female) once in a while, but only supporting classes like healer/cleric/priest (priestess)/mage, although I don't play healer/mage that often. I although mostly play male characters for other classes like warriors, archers, or thieves.
I can't stand staring at female half naked body though, that's another reason why I play male character cause it's easier on my eyes to stare at the opposite gender from top to bottom rather than staring at my own gender pixel.