Usually if men don't work, they can't find values in themselves, in the beginning they may still be okay, then they really have to have a vision to drive them to continue to be a full time parent....one may understands what I mean if she has been a full time parent. Once they lose the "interest" or "drive", men could waste a lot of time ending up doing "nothing". I really do see these kind of men before.....really horrible.
Furthermore being a full time parent is not easy at all, it could be very demanding .... and men don't work as efficient as women on looking after children......they're not careful and attentive enough lor...... I definitely won't let my hubby to do my job....unless your hubby is more demanding and attentive than you're.
In short, it's not just about monetary issue, it's also about who's more capable...And the bottom line is is this his vision as well? Or it's only your opinion.