True enough. My 60s were awesome. My 70s are another story. Still lots of fun because thank God I am in good health, and I have my music, but the stairs of the world are noticeably steeper, as are the hills when I'm on my bike. Also, at the the day I realize I haven't done a fucking thing, but nobody cares.
And, I think about death approximately as much as I thought about sex when I was in my twenties.