Oh wow, what if my long lasting childhood fantasy came true?
Well, I think I would want to become a breeder, but the only problem is that if the mechanics of breeding were to become more like breeding real animals (like being a professional dog breeder), I'm not sure if I would be as good at it.
I have a lot of patience with animals (I used to help raise pitbulls for a while) as well as I've trained and house broken various dogs and cats, and I do love being around them, so I guess knowing that and the fact that I love pokemon in general, I think I could probably pull off being a Pokemon Breeder if I tried really hard at it.