I too was a loner. I want to say that had I been popular, I would have had more self-esteem. With more self-esteem, I would have had a better chance of finding a wife (or at least some friends).
On the other hand, if I hadn’t been a loner, I probably would have focused more on my friends/girlfriends and not on school. Therefore I probably wouldn’t have finished college, or even gone at all.