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.
Just in response to your annoyance, I have found women ive been around tend to have more of a “fuck other people and the climate” attitude than most of the guys (its usually not that abrasive, just more of a “why wouldn’t I water my grass? We have the water” attitude). Especially if there’s kids, they dont care about anything else (that’s just biology I guess). Please dont take this as sexist, it is just something ive observed.
I get very annoyed with people wasting unnessesarily and using amazon.