LOL! Wat The Hell! Your 26? I thought you were 21?
Im 25 and yeah we still got a lot in us and anyone else, just that as we grow older we can change...
Sure you will see it in your friends too. For example when I was 19 - 20 yo, me and friends would go nuts at our house parties with a pool and a band room, we'd make a tone of noise. Now adays we just sit back, have drinks and a BBQ then might go out to the city where my friend DJ's.
Yes you are older, you can still have fun, but a different type of fun.