I don't see it being all that different to Formula 1 really - lots of money, lots of speed and lots of spectacle..
...and just like F1, the spectators come to see the crashes!
From RFC 1925: "(3) With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead."