I've been riding for almost four years now, and i don't see myself getting any better than I am now, not in an "I'm too good to get any better" sort of thing, I just don't see myself progressing any further than I am now in riding, but it doesn't stop me from riding at all, I prefer to ride alone when i want to try something out of my comfort zone, I just feel I can concentrate more with just me, my music and my riding. But I don't think I would have started if I didn't have my friends with me, taking an interest in the sport as much as I did at the time, and now they've all given up and moved on because of cars, jobs etc. I've just adapted riding around my job amongst other things, but I still don't see myself selling my bike and giving up, its just what I've always done, it's what everyone seems to know me for, and I still enjoy it as much as i did when i got my first trials bike, IMO if you cant ride alone and enjoy it, you don't truly enjoy just riding, but some people are different.
It's now a lifestyle for me, I wouldn't be able to just stop, I enjoy riding in any shape or form.