This must be a result of growing up in the 60's-70's thing or earlier. Back then, public schools actually taught Ecology. Give a hoot, don't pollute, etc. And don't get me started on the Native American in the ad on TV with trash dropped at his feet.
Why do some people not get it? Walking my dogs near our rural home I find new garbage every day. And when I don't pick up the beer cans, they really add up! Mostly the same cheap brand. I'd love to find out where that guy lives and "return" them to him.
I ask myself why he doesn't just wait to throw them out at home? Maybe because he doesn't want to get caught with empties in the car, by either the law or his wife! Or, knowing some, maybe he's on his way TO work.
Lots to do. Getting there.