Another point....
Question: what advancements has NASCAR ever given us? OK, not just automotive, but in ANY field? New and exciting ways to advertise tobacco and alcohol products, I guess...but what else?
F1 has given us: active suspension, variable valve timing, electronic fuel injection, broader applications of composite materials (carbon fiber, kevlar, etc.), traction control, greater understanding of aerodynamics...the list could go on and on and on.
NASCAR racing has given us: uh...um...
They still use carbuerators and live axles! What the hell, man? I remember 20 years ago when there was a great article about this HUGE advancement that was going to change pit-stops forever...someone came up with the idea of using tubes of rubber glue-like weather-stripping to attach the lug nuts to the wheels so they could put the tires on faster. Whoopee! That's sure changed MY life for the better...way more than traction-control and variable valve timing ever could!
Bottom line: to each their own. If you like NASCAR racing, more power to ya (make sure it's limited by a restrictor plate, though). I, for one, like F1 and WRC and LeMans and SpeedGT and...you get the idea. Don't ask for comparisons between NASCAR and any other form of racing...just like WWE will always lose in comparison to real sports, NASCAR will lose in comparison to real racing.