I respect their decision to break up. In the latter years, it was very clear that the band was going through personal struggles. Bonham is a magnificent drummer and it is difficult to think of any other drummer in the band. Led Zeppelin from 1968 to 1980 has been amazing. I think if it were to continue, it may have gone in a direction we wouldn't want it to, with less input with Page. ITTOD was some good work from JPJ, but I feel if the band wouldn't have broken up, soon the album would basically be all JPJ with some input from Plant. I believe Presence is the last album with noticeable input from Jimmy, so I believe there wouldn't be much of the brilliant riffs and solos that we love so much to this day. Personally, I only like a handful of 80's music and I'm glad it ended before the man-made beats of the 1980s that a mass amount of rock bands that made their way to that era included into their music. Also, based on the strong bond of all the band members Bonham can't simply be replaced for many reasons.