There are a lot of things humans do that I'm not a big fan of but today I'm going to single out littering.  It pisses me off.  I was just driving home from work and the guy in front of me rolled down his window and tossed a bunch of garbage out.  I don't see hardly any scenario in which you can defend that.  Oh, I really needed to get rid of this garbage immediately because, um, I'm allergic to it and I was about to go into anaphylactic shock.  Uh, no.  

It's really not that hard to hang onto your garbage until you get to a trash receptacle of some sort.  All littering says to me is that you're lazy and selfish and have no respect for the world or other people.  Nobody wants to see garbage laying around everywhere.  It just makes the world an uglier, cruddier place to be.  Throw your crap away properly, jerks.