Water usage is probably my biggest. Living in a high desert, my wife and MIL see no problem with filling one side of the sink with hot soapy water to wash a few dishes because “that’s just how I’ve always done it”, to watering the grass and plants for hours. All of this makes me mental.
(US context) The advice I got was that every marriage has a prenup. If the couple doesn’t write it, it’s just the default prenup their state wrote and it’s going to be crap for both people.
That’s exactly correct