I've never really considered it before. Though, I don't really think there's anything I know THAT much about. I would probably struggle with topics and such. I do like helping people, but I don't think I'd be capable of making it a career choice. I do wanna be an author one day, but that's unrelated to helping people, really. That, and with my anxiety issues, not getting somewhere for a long time is really discouraging. Besides that, while making money from it would be nice, I don't help people to get anything out of it, y'know?
I like making people happy, and that's my own reward.