Hey, Be fair... it's tramatic to go from feeling still like a kid in your 20's to actually feeling like an adult in your 30's. I'm sure you felt the same way if you remember back all those years ago ( ;-) )
The thing that i mind most amusing was the recent episode of HIMYM, featuring the Murtaugh list... and how true that is...
Like eating a whole large pizza by yourself. In college... easy. Now... dear lord would it hurt.
I used to go to vegas and be up for 3-4 days in a row... or be out driving around and end up 3 states away... Now if I am up 24 hours in a row, I feel terrible.
Hangovers are much worse... Sleeping on Sofa beds... I'm at the point if I can't sleep in a bed visiting a friend, I'd rather stay at a hotel. Just easier and so worth the money.
Now that I have a child though, I really feel more like an Adult...
Darn Peter Pan complex...