I think it's a continuum like any other desire. I have no desire at all to skydive :-) That doesn't mean I'm risk-adversive. I only think not being with other people is bad if it's a defense against feeling. My sister-in-law loves being alone in her house on the side of a mountain but she still volunteers once or twice a weeki, (is married to my brother :-) and is active with her grandchildren and not "anti-social."

Could be though that if you ask the question there's some lingering problem. If one were comfortable with one's self and lifestyle then one might not ask the question?