Because I think they look ugly and out of control. Plus, it seems like anyone who does one is considered top notch. First two things I get asked at every park I go to is can I do a tailwhip, and can I do a back flip. Those two things, and 360's seem to be all you have to do these days to be considered a good rider. If I made a video with just those, I'd probably get 15k hits in a month, but it doesn't show any real skill anymore since most kids have them dialed before they can hop manual a park bench.