Reclaiming my youth?

Last night I went to see Bon Jovi live in concert - the last time I went to see them live in concert was 21 years ago, so it is fair to say it was a very different experience this time. I remember 21 years ago, being in absolute awe at seeing a famous person in the flesh, loving the songs and being pushed and jostled around until my Dad hoisted me on his shoulders for a while. I am not the only one that was a lot older this time around, the crowd was mostly (but not all) older and the band themselves were a lot older (although Jon Bonjovi has a much better plastic surgeon than his guitarist Richie Sambora)
I thought I might not like it as much as I did when I was young, but I was wrong. I danced, sang, clapped, cheered and hollered like I a teen with no inhibitions. I thought I would not like that there were allocated seats (even though I stood for the entire performance) But I did. I loved that I was not pushed, pulled, yanked, stepped on, or burned by cigarettes and covered in someones beer. I had an amazing seat, right in the middle about 15 rows back and I could see the band clearly all night.
It made me feel young again while I danced and sang. It made me feel mature that I liked the civilized nature of it. And it made me feel old when I could hardly move at the end because of cramping up muscles, and that I couldn't be bothered going to town afterward, but headed home to bed. I am not the rock chick I once used to be. Is it the sign of being older when you would rather be at home than out partying? If so, I am happy to be older and I have no desire to reclaim my youth, but don't mind visiting it once in awhile.