Honestly I am in that mode right now. I am almost one year clean and still feel like odd man out in social situations. I do hang out with people who drink regularly. I have quit drinking and using drugs. The drinking occassionally bothers me but the drugs I straight out miss. Most of my friends know this so they are very understanding. Occassionally I have had to leave a party early just cause it was making me crazy. Lately I have been having more fun but it has taken awhile to get to that point.
One bonus for me however...yeah no hangovers! I got to love that aspect of it!