Lefty over hyar! My teachers would get on to me about writing left-handed for a fair piece...annoyed the shit outta me because, HELLO, maybe I'm just left-handed? That, and having random people in class ask me if I'm left-handed...when they see me plainly writing with my left hand.
I use my right hand for some things, like holding a fork if I'm cutting something with a knife (I always, ALWAYS use knives left-handed), or using a mouse/trackball...but I'm mostly a lefty.
I can honestly say I inherited it, too, because my dad was a lefty, as well. I say "was" because his dad (my granddad, AKA: Grandpa Fuckass) pretty much beat it out of him. Now, he's still fairly well right-handed, but he's also somewhat ambidextrous.