I got a part as a chorus girl in a show called Every Sailor and I had fun doing it. Mother didn't really approve of it, through.
I don't think people who have children are acting selfishly or unselfishly. Having a child who'll be loved, to parents who love each other, is the important thing.
Models now need to promote themselves, think like businesswomen and diversify their careers by doing other things. Chances are very slim that a mere model will become a household name today.