Didn't used to be that way. Didn't used to wipe more than a few dozen times, progressed further in the raid, and then moved on to other raids...not the exact same raid with a slider turned up a notch.
Blizz used to have the decency to provide more dungeons and more raids to keep you on the treadmill...not the same 9 scenes on a loop with the treadmill tilted up another degree....