One of my pet peeves is people who pollute the shared social environment. For example, when I ride the bus and there is a person playing music with their smartphone, but using the speakers instead of a pair of headphones. That irritates me to no end. The rest of us don't particularly want to listen to your music, not necessarily because it's terrible, although it is, but simply because we didn't choose it and have little control over the situation. I hate littering for the same reason, and people who leave their shopping carts in the parking lot rather than putting them away. In fact I've only seen one instance in which that sort of behavior was excusable. A mother with two kids in the back seat on a blistering hot day in July. There weren't very many good options for her: leave the car running so the kids are cool with the A/C, but what if someone steals the car? Leave the kids hot in the car while you take the cart back? Then the kids are crying and miserable when you return. Or leave the cart? That seems like the least worst of all options, considering the circumstances. But most people, most of the time, are not confronted with these sorts of dilemmas, and are merely inconsiderate, for which I have no patience.
