Well, formula 1 is pretty darn boring too. Plus Americans have Indy Car right? That`s not just oval racing. And from what I hear it`s much more fair than Formula 1, where if you don`t drive a Ferrari you have no chance.
Anyway, rally is pretty boring too, rallycross is where it`s at, imo.
I certainly prefer the more European/worldly racing series to the more American stuff based on stock cars, ovals and drag strips. But I don't get too riled up about people preferring NASCAR or drag racing over WRC. I think all forms of racing have their merits.
BTW, if you want to see the most bad ass driving video ever created, do a search for C' Était Un Rendezvous (or Rendezvous in Paris). It's absolutely mindblowing, particularly when you realize that it was done illegally.