I've done auto-x and drag. I prefer drifting because to me, it is a lot more fun. It takes skill and it's definitely expensive (probably MORE expensive than drag and auto-x). It helps you learn how to handle and control your car in just about any situation, especially in the rain.

It all comes down to it being one of the most fun motorsports I've ever participated in. That's all there is to it. It doesn't get old, I agree with agemomai. There are always different tracks and different techniques and speeds to try out. IMO I'd say that drag would get old A LOT quicker since it's always just going in a straight line.