I think age is totally relative. There's an 18 year old I know and love in and out of AA who considers me old. According to him, I can't understand what it's like to want to drink and hang out with my friends and be "young". I'm 29.
When I came into AA at 24, everyone perceived me as young. But I was sick and tired of being sick and tired. I felt about 80 years old and was weary of life already. I feel much younger now!
I'm sure it's very difficult if your social life has surrounded drinking, but you'll develop new parameters for your social life. You'll meet new people in AA to hang with, and you'll figure out how to still fit your friends into your life (assuming they're actually friends and not just drinking buddies). Change is always hard.