Look man, you can occasionally be selfish or lazy without immediately being an absolute drain on society. Is not putting the cart back ultimately a dick move? Yeah, but its also an incredibly minor dick move, and maybe I've already used up all of my fucks for the day.
Edit: Ok, yall have convinced me. I'm going to start wheeling shopping carts into the most inconvenient places in the parking lot on purpose now. It's really funny how much it ruins all of your days, thank you for giving me a mew source of joy. I wouldnt be surprised if I tipped and treated service staff a hell of a lot better than most of you considering how much you're all itching to feel superior to others over extremely minor things