My wife and I have joint finances (she's a stay at home mom), but we each have an allowance. We each get money each month that is 100% ours. We don't need to

My wife and I have joint finances (she's a stay at home mom), but we each have an allowance. We each get money each month that is 100% ours. We don't need to consult with each other about how it's spent. She can burn it for all I care. It gives us enough freedom to make purchases we don't agree on (unspent money rolls over, so one can save up if needed). Meanwhile, we are both very involved in all other financial decision, with all disagreements settled in favor of the more conservative party.