I used to think like you did, at 19. I'm glad there's more 19 year olds thinking this way, so more women stop getting knocked up so young and throwing away their lives. I'm sure motherhood is rewarding, but I'm sure it would be more rewarding if you had some good life experiences BEFORE tying yourself down with family obligations.
It might change for you, though, you're still young and have a lot of other things you want to do, and children doesn't fit into the whole equation in your mind right now.
I always said my twenties were for me, and I've stood by that. Now that I've met the man I want to spend my life with, my biological clock has finally switched on. Just in time, too.......I'm only a year and four months from my thirties. I still intend to wait until I'm finished school though. Kids will come when my goals are met.
Live as if you were to die tomorrow. Learn as if you were to live forever. - Mohandas Gandhi