I very much relate. I too am extremely introverted and believe I would choose to spend most of my time pursuing solitary activities even if I didn't have AvPD. I am fine with being an introvert. I think it's the degree to which I'm introverted that is the problem. The average introvert is perfectly capable of having fulfilling relationships and living fully. I think my overwhelming difficulty with these large scale areas is where my AvPD distinguishes itself from typical personality traits.