[scott_s]

I think that in a healthy relationship where one spouse stays home, there's no concept of asking for money. All resources are assumed to be shared, and discussions will of course happens about spending money, but not permission.

I agree that the scenario you're imagining sounds undesirable, but I don't think that's necessarily how one-spouse-stays-home must be.

[grahamburger]

This is how we do it. My wife would also baulk at the idea of 'asking' me for money, even though it's my job that brings money in for the fam. To me, it seems strange that a couple would consider some money 'his' and some 'hers' regardless of where it came from. I've seen hints of that type of spousal relationship here (including in GPs comment) and other places and it's very foreign to me.