It doesn't change when you get older. I'm 36 and ran into friends today at the mall who are 38 and 40. They were talking about parties they had this summer and playing beer pong in the pool all day and not remembering getting home. Then they asked us over tonight to grill and use the margarita machine they got. Trust me- it doesn't get easier the older you get- people still party as much.
I wanted to go over and drink. We ended up staying home- I didn't want to go and not drink and I didn't want to go and drink. It kind of sucked.