You attacked a lot of addictions, be proud of that!!!
You might just have an introverted personality. Absolutely nothing wrong with that! No need to be a social butterfly if you don't feel like it.
Important thing is to be happy. Hope this helps a bit.
I personally am a bit introverted, I have 0 need to have 20 friends calling me all the time to do stuff. I count my friends to only a few. 2 actually. LOL!
Me and my 7 year old son.