It's the accessibility to the drivers and the cars. I probably spend more time walking the pits (pro and sportsman) looking at the cars, talking to the drivers, and watching the crews do their magic. Without the show in the pits, I probably would'nt go to any drag races.
I've gone to WoO sprints races at New Egypt NJ and CTS races at Flemington. At both tracks, I had access to the drivers and crews before and after the races. I even went to Nazareth PA. for CTS and Busch races. I paid big $$$ for a pit pass and had a great time. Then the next year, pit access was restricted and I stopped going. Now Nazareth's another ghost track.
So that's why I spend my $$$$ with the drag racers and stay home to watch Nascar and IRL on TV.