Everyone agrees you should put your cart away, but there is no reward for doing so and no punishment for not doing it. Therefore it says a lot about the individual if they will "do the right thing" just because it makes things slightly better for other people, or if they won't bother doing a simple act in order to avoid inconveniencing someone else if they aren't forced to do so.

For such a simple act, it shows an extreme amount of selfishness to not do it.

Well....maybe you should put your cart away lazybones. Then you won't have to worry about the Krampus getting you.

Obviously not as bad as genocide but it's pretty close.

Funny I never see such hatred for people who leave their garbage on movie theatre seats or not clearing their trays at fast food places. Some people have disabilities and sometimes it's just tough enough to shop and they are too tired or worn out by the end of their monthly shopping trip to bring the cart to the cart shed. I feel like everyone shitting on people leaving carts out of the cart shed are fully able bodied healthy young people who will one day do the thing they are complaining about, and realise they were being wieners about it. It's not the end of the world to leave your cart 10 metres from the shed.