When do we get old

The day I get 'old' is the day I stop listening to new music.
Once you get 'locked in' to only listening to the age you were young, at your 'best' in your mind, is the day you stop 'growing'.
Rock and Roll is still very much alive today. Fire up some Papa Roach, or even Foo Fighters. If you're not into Rock (god forbid pop stuff), country is good too, even though I think 'Country' is just 20 year old 'Rock' (Elvis is now 'country' stuff, ook).
You're only 'old' if you think you are. :)