In reality, if you're road racing and you're pushing your car to its limits, you're going to be doing a certain amount of drifting because you'll eventually pass the limits of grip. If you're only driving to the max capability of grip, you're not going as fast as you could be. Push it too far and hang the back end around every corner and you could be wasting time in those corners, *depending on the corner*. Tell a tarmac rally racer that drifting around 180 degree turns in the course is slower than not drifting and he'll laugh in your face.
And this whole argument about wasting tires....like you guys have never done a burnout