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.
Yeah that is unfortunate. I like traveling too but usually drive. No matter what you do travelling is bad for climate.
What really pisses me off is asshole tourists who litter or otherwise make nature unenjoyable (massive douche hiking while blaring annoying music out of a Bluetooth pill)
Then again billionaires fly their jets to work every day and burn up millions of kwh daily for their 5 properties they own. So I think we can have a couple travel vacations a year.