I really don't like Zeppelin, but what I hate even more is "so-and-so is dead, so is the band" mentality.
I keep hearing this about so many bands, mostly The Who and Zep... People want the Stones to fade away, as well, but I figure if you can still get up on the stage, full an auditorium or stadium, and sing, go for it and make some gold (that's a touchy subject for the Stones, is gold.... :/)