Because today's subway ride started out with a guy yelling crazy rants at people-something about finding religion and how we were all going to hell. When I changed trains, I was lucky enough to get on the one with a Mexican mariachi singer, and not a very good one at that. He got off, and I thought things were looking up, but then there was this "filmmaker" selling his animated movies for a dollar. And yelling about it at the top of his lungs.
My ears are still ringing from having my iPod turned up full volume.