I can envision a decent proportion of men, at least myself and a few I know, who would find it preferable to have a redundant source of income in the household.
Even if a woman ends up becoming a non income earning partner temporarily or permanently, having one who is capable of earning more can be a desirable trait for multiple reasons.
Attributes like physical attractiveness and traditional positive feminine qualities are generally what men list as what they seek.
Of course, we all know of exceptions but the general patterns of what men/women look for in a partner is quite well known at this point.