Huh, I always thought I just had a problem drawing characters facing right, because I am horrible at it. I always draw my characters facing left. I can do it to the right, but with great difficulty. I never thought that it could be because I am right handed. I never made that connection; but apparently it must have something to do with it because, according to this poll, I am not the only one!
Oh my god, I always think in the back of my head that people are going to hate my art because I feel most comfortable drawing racing the left (righty here). I try to mix it up but the right is haaaaaard. ;__;
definitely facing left in sketches and illustrations. I'm right handed. But it's different in my comic because there I have to control things like that. probably even more often characters are facing right, because usually the movement is to the right.
I have a tendency to draw my characters facing left since I'm right handed. I think it's mostly a habit developed when I was learning to draw (self-taught), and I would draw quadrupedal characters. Since I'm right handed, I started with the head, then worked my way toward the right with the body and everything (so my hand wouldn't drag across the pencil and smudge it), which resulted in a left-facing character. I still find faces in profile easier to do facing left than right.
As for handedness, I usually try for an even balance, and usually the pose dictates the character's eventual handedness when I'm not actively thinking about it. So I think I have an even mix. In some instances, usually with weaponry, I try to actively think about the character's actual handedness and make sure I get that in there no matter the pose, but with other random drawings, I go with whatever fits.