For how long has people said that "This is their last tour ?". I remember something from 25x5 where they said that people had been saying that since the 60s. And as for Charlie (I think that was on the 25x5 as well) he once said that he always looked upon the current tour as the last one..
One could be afraid, hope and think that the "A Bigger bang tour" is the last one. And "This could be the last time".. But it ain't over yet, so let's all just enjoy it as long as we can!
- mjOL