I'm sure it has been mentioned before, but OMG, all of the disposable plates/cutlery, when eating at home!! why!! don't they have half a dozen dishwashers?
That drove me nuts! He just kept saying 'well no matter what, I won't go into debt' without any explanation of how. That isn't how it works! You can plan ahead, and be in a great financial situation, but things can still go terribly wrong and you can run out of money. You don't just decide not to go into debt, and then it is so.