I tend to ride solo most of the time as well. For one thing, it's easier...it's hard enough to manage my time (and my daughter's) so that trying to coordinate rides with others can be difficult.

I also tend to find that I enjoy the alone time. For me it really becomes a form of meditation. When I'm with another person (or rarely a group) I often spend a lot of time worrying about my pace, their pace, etc. When I'm alone I have only myself to worry about.

I would like to find more friends to mtbike with since when I ride solo on my mtb I keep to well-traveled fire trails. If I had a riding pal, it would be easier (and safer) to ride some of the more remote trails.