KBJ BABY!
I love cheering for the guy everyone hates...and go to at least a couple of races a year!
Is it a sport? Of course! It's a motorsport, and while it may not be as technical as F1 or Lemans (both of which i love as well), it is like the Football of motorsports. It's a brutal racing style, the cars are thrashed and beaten and banged up and pushed to their limits for the ENTIRE race...this is kind of the way i look at it...
F1 - Finesse racing...it's the martial arts of racing. The cars are like samurai swords and most times, one mistake costs you a race.
Lemans/Rolex/Touring/GT - Epitome of Motorsports...combines the finesse of F1 with the brutality of NASCAR. Truly the in between.
NASCAR - like i said before, the Football of motorsports. HEAVILY crowd driven, the cars get the hell beat out of them while they essentially run at red line until their motors blow or they win.