My husband, when he's around. We just got him a bike when we were back in the States this Feb. He likes riding, but because of work he's not around much to ride with.

So I guess my answer would be "myself". I agree with HappyAnika, you can do whatever you want and don't have to worry about others riding with you. I feel that I'm a bit slow, so its nice to not hold someone back. But I would like the company once and a while!