it doesnt get old for me, because at every event there are new tracks layouts, new levels of speed, and new degrees of difficulty. people will always push themselves to go faster, harder, and wider.
i like it because its hard to do. it seems more challenging to me to stay sideways, make smooth transitions, and execute clean entries and exits throughout a whole run than it is to grip a course. but then again, i can think of plenty of layouts that it would be harder to pull a good time gripping than it would be to get a good ranking in a drift competition or something.
im not sure really. personally, i dont think there is any feeling in the world like it. going full blast sideways, with the steering wheel locked and the wind blowing in your face, while your tires scream and beg for you to stop, threatening to explode, until you transition the weight, and make a change in direction so smooth it feels like your floating... straight up sex.