It's the fault of American culture to let a woman believe she can control her husband, when he is actually the head of household, even according to American Christian beliefs.
Where I grew up, a husband wouldn't even tell her because it's not her concern and he'd go buy all the cars he wants.
It's not like you're screwing another woman, (I hope not) then she would have reason to go off the deep end, but not for doing something productive that keeps you out of bars and home, close to her and even includes the kids.