The most generous explanation I can get is that people who don't put them in the corrals think they're not as bad as other people not leaving them in the corrals because "hey, at least I put it on the curb," or "hey, at least I didn't didn't leave it in the handicap area," or "hey, at least I didn't put it on a slope so it won't hit any cars," etc.

I also think there is just a ton of classism here. A lot of people feel better by belittling others. I think on some level the working class realizes they're being taken advantage of, but rather than taking it out in those above them they make others feel lower than themselves. "I am a hard worker. I put in 60 hours a week. My body wasted away. I am honorable for doing this to support my family. I am not lazy. I have skills. Minimum wage workers at the shopping center are lazy and have no skills. I am doing them a favor. I will not stoop to their level by performing such tasks." I think it makes working class people feel like royalty to belittle other working class people they view as less than themselves.

I don't know how it got like this. I can make guesses all day long but I really don't know.