I love to isolate because I have chronic anxiety that literally traps me in bed. I also did most of my drug using alone, in my room. Rarely did them elsewhere. Haven't had any good friends in a good few years, and very few I can trust.
I'm hoping my desire to isolate the more sobriety I have behind me, once my new meds level out/kick in, and once I begin to exercise regularly (to begin this weekend) will decrease as I enjoy interacting with people, just experience high stress and anxiety when I do so..unless self-medicated.