It forces you to observe them longer! The elegant car! The wonderful driver! Don't be so cheap, give them some attention!

Seriously, do these people never have the opposite situation happen to them, where they could've driven, but didn't, because someone wasn't using their turn signals? Doesn't this balance itself out? What is wrong with these people, can't they reflect?

EDIT: I just realized, maybe it does happen, and because of that, they'll follow suit instead of laws. I honestly find these type of people pathetic. There have most certainly been cases where lives were lost because people were too lazy to use their turn signals. Pathetic may be too nice.