ME ! because quite honestly I know best about decorating and interiors (Decorators Daughter) and have a good eye for colour coordination. Everyone has their own skills and that is one of mine.
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7.
I leave that to my wife. She dones't interfere in economics. I don't interfere in household. So my "bonus" is that I can make money, spend it w/o anyone asking & w/o having to give accounts to a nyone. Her advantage is that ANY decision taken about the house (like which home we'll live, the interior deco we use etc) is her call entirely, I don't even make a suggestion, only say if we can afford or not.