Unless you agree to that. My sister and her husband operated fine on that arrangement for fifteen years. Then they had kids and there wasn't as much "extra."
He's a little spoiled, not terribly disciplined, has expensive hobbies, and does moonlighting that brings in a five figure a year "bonus." She has simpler tastes and didn't have his needs and makes much less than he does. His money went to her toys, hers she saved and it went to their vacations. They still managed to put aside the maximum in 401ks and set money aside. She didn't mind "spoiling" him and the arrangement worked for both of them.
I've known people who were happy with arrangements with their spouse that I'd be "no way!" But if they are still happily married after 30 years, and aren't harming themselves or others, I'm not judging them - I'll judge their life against what I believe will or will not work for me - but that isn't the same as saying it never works.
