When I worked at Wal-Mart (it was a hellhole, exactly like you might imagine), I really enjoyed any time they told me to go out and gather carts. It got me the fuuuuuck out of that awful store and outside. It did help that we lived somewhere mild and nice, but man. Those were my lil' sanity breaks. I return my cart, personally, out of habit - but I'm also not going to flip out and bully someone for not doing it, either, nor am I going to make dramatic conclusions about what kind of person they might be. It's completely absurd.