NASCAR is interesting if I can catch a road race. The ovals just don't do it for me. I like the strategy individual drivers employ to try to get across the finish line first. A road course provides a more interesting battlefield. An oval requires driving skill and endurance but the event is monotonous to me.
I'm a big fan of race engineering and therefore find Formula 1 a lot more exciting. I think that the limitations placed on NASCAR teams prevent improvement in vehicle design as well as stifling creative engineering. I think that the purpose of racing is to advance automotive technology as well as provide an exciting experience. Therefore, I like to see regulations that give engineers freedom to come up with unique solutions as opposed to regulations that require engineers to build an archetype vehicle.