Pox you wouldn't think pickin up after ones self would be asking anything outta the ordinary.
I've long ago recognized that people who are loud, hot-tempered, heavy handed with their horses are the same dang way with their wife, husband, children.
I think same goes for people who litter. I bet a closer look would show they run around in greasy underwear, McDonalds bags & lotto tickets pour outta their vehicle when they open a door, and you would fear for yur dogs' health to let him eat in their house.