What do you mean? Of course those are optional. If you don't want a career, you're not going to have one. If you don't want to get married and support a family, then you don't have to.
I mean, "saddle up to a breadwinner" is an extremely demeaning thing to say about a whole class of people. The reality is that men dominate all desirable, successful professions, so the probability of a man "saddling up" to a woman that makes significantly more than him is very small.