NASCAR didn't MAKE them do it, but they are in charge of the rules that make it the winning strategy, and don't even TRY to do something to prevent it. If the cars could actually pass each other and separate themselves, the half throttle schtick wouldn't work. I also hate the road course pit strategy where you spend 80% of the race trying to be the first car to pit the final time, but if you don't do it, someone else WILL, and they will most likely beat you, so what are your options? It's the team's job to win races, regardless of what you have to do to accomplish it. It's NASCAR's job to make sure the finished product is worth watching. In the case of superspeedway racing, they are failing miserably.