All this talk of reunions is bullshit.
It is very rare for a band who reunites to do anything truely creative or capture the kind of popularity they had "back in the day" for longer than the accompanying media hype lasts.
All right, maybe we love that shit for two reasons:
a) We never got to see the reunited band before they split and get sick of your Dad/older brother talking about how great they were.
b) The days of world beating superstar bands is over and you are seeing the kind of show that will never be seen again.
It also shows that many artists either find it difficult to get accepted doing something different or have nothing else to offer.
One thing`s for sure, these has beens never go home with empty pockets.