Would you believe my brother goes though his pockets at the end of the day and takes all the pennies out of his change and throws them straight into the garbage. No joke. He has for years. We're talking sometimes 10-20 cents because he only deals with cash when he's buying things. That to me is a lot worse than not picking them up.
Ironically, he just filed bankruptcy in June.

In the 80's I had a friend who was one of those spoiled kids that got at least a $20 bill every time he left the house. He acted like change wasn't real money. (Including the silver coins and quarters!) If money wasn't paper he had no use for it. He would just throw his change around his room, in his locker, wherever. I of course never had any money, so to see him with $100's in quarters laying everywhere was the craziest thing.
Every so often some of the change ended up in my overnight bag.

The money usually went straight into the Centipede at the pizza place near my house or into cases of M.U.S.C.L.E figures.
I did confess this to him a few years ago and he laughed. He told me "that's funny as hell! I never knew cause I didn't care about change!" Given his reaction I'd say my conscience is clean now.