I think if I had set goals and pressured myself to reach them then it may become more of a chore. But I only play for fun and the finger ability and musical knowledge come in small steps which is fine with me. The way I am doing it goes against some advice that I read somewhere.
It is similar, for me, to snow-skiing. Sometimes I will make a run and concentrate on proper form and keeping some weight on the inside ski and blah blah blah. But I enjoy it a lot more when I just go hit it. But, the better at carving hard-packed southeastern snow the more I enjoy it. So I do make few runs to while concentrating on getting better followed by several run in which I don't concentrate on anything. So far, playing the guitar has been similar and I imagine it will continue.
Enough rambling...