In this age of reunion tours and overblown self-important frontmen, it is refreshing to hear a living breathing rockstar admit to his mortality.  According to Billboard.com:

"Guitarist Joe Perry said that touring and performance is no longer something the band can take for granted: "You realize you're not an immortal, and you don't have this 22-year-old feeling of 'this thing can go on forever,' and you know, 'I can do whatever I want, I can go for three nights without sleep and everything will be fine.' You start to realize that it's a very delicate thing, life is a delicate thing, and being able to perform at the top of your game is a delicate thing. And it's one of those changes, you know, that comes over. I'm still amazed that we can put on the kind of show that we put on. Every night could be our last.""

No shit Joe.  You don't say.  Luckily, I've already seen Aerosmith live, so I can cross them off of my list.  Unfortunately, there's still a lot more that needs to be taken care of.