Art teachers always weirded me out. I had an art class for a couple years. I think it was 2d/3d design. It was a great class and the teacher was pretty cool. Kind of unbalanced, but cool anyway. Wouldn't say he had an impact on my life, though. The only teacher I had that's impacted my life a lot was in first grade. Then two years later she died.
But anyway. If you keep thinking about being a teacher and you find that you can do it, I'd say go for it. Especially if it's a subject you're into.
I would, myself... but I'm greedy and I want to make a bunch of money, so teaching is out for the time being. haha.