Hi falko89.
Actually you are not that unique. I never drank when I went out with others. They could be absolutely trashed and would be drinking soda of some sort.
I would go to visit friends or family and not once drink, didn't even have an urge to drink no matter how many others were drinking. It could be several weeks and I wouldn't drink while out or away visiting.
I live alone and I only drank at home.
Where you and I are different is I was a daily beer drinker. If I was home, I was alone and I drank about a 12 pack a day, every day...and night until I went to bed...passed out.
There are many resources available if you want to stop drinking
Here is a link to some of them:
http://www.soberrecovery.com/forums/...formation.html
There is also Rational Recovery, AVRT which is the Technique I have used successfully the last few months to now be permanently abstained from alcohol.
There is a lot of good information here. Please take your time to look around and ask others how they quit drinking.