But I almost never buy their CDs afterwards. I've already heard the songs once, live ... that's usually enough for me! I own very few CDs that I'd ever want to sit down and listen to all the way through. Usually there are just 1 or 2 outstanding tracks at most.
One reason why I rip them. With a lot of CDs each track is good in its own right but there is too little variation to make it worth listening for 40 or 50 minutes in one go. Randomised among tracks from a bunch of other CDs the variety is just right.