Spectator Sport

Exactly why do people see car accidents as spectator sports? I realize on the freeway that accidents do slow down traffic, but people will actually slow down further to get a peek at it. One might wonder what their hoping to see, if they really wanted to see blood and gore then maybe they should have entered the emergency response field. Think about it, do they really need to drive by a carbeque so slow that they could roast marshmallows?..........