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.
My biggest pet peeve is people who scalp their lawns and spray shit all over it to make it green and kill the bugs. If it didn’t kill the buggies 'n stuff I wouldn’t care so much but I’d still think it’s dumb cause all they need to do is not mow so aggressively and plant some clover to fix the nitrogen. Like their lawn needs less maintenance not more. Stop fucking spraying shit all over your lawn please AAAAAAAAAAAAAA.