FemShep all the way, girl power!
There's tons of reason why I do play her, so brace yourself:
Jennifer Hale is awesome! And my recognition of her voice work goes all the way back to when I was a kid. (Meer... when was Mass Effect released again?) Jennifer Hale also brings the character to life, moreso to me than her male counterpart who sounds monotonous and bland in comparison.
I always play a female character when given a choice, and I also tend to use nothing but females in my parties.
I may not be a woman myself, but I know what I like to see. So, it's much easier for me to create a face for a female character to look good and have an emotional connection.
I love strong female characters, whether they be physically strong and have muscles or mentally strong. FemShep I feel is all of that, but she could use some musculature. Hell, Jack could use some too. (
Take a look at Meryl Silverburgh from Metal Gear Solid 4 to get an idea of what I'm talking about)
I'd rather look at a female's backside than want to throw up because I have to look at some dude's.
Last reason: the male version of Shepard is ugly, though that's not saying much coming from me.