I think you all miss the point.
This is not about musical tallent. If it were then chuck U2, Coldplay and almost any current artist into that lot. They are just rehashing what those before them have done.
This is meant as entertainment, a bit of nostalgia if you like and you will find followers of this sort of thing in many areas of human endeavor.
Daniel is pissed off because the tickets are a rip-off for MB, however what does ticket price have to do with how good of an artist he is? We are ripped left right and centre in this country, taxes, car prices, hi-fi prices these are all likely going to cost you a lot more in the end than the price of a puny ticket, so bleat more about those.
I agree with Shaun about Mel, however we are unlikely to see him here anytime soon unless you attend a John Edwards show and he gets channeled or something ... However as far as live shows go, again, it comes back to entertainment. I think we all get stuck in the hi-fi studio listening mindset.