if training and "friendly" sparing makes you happy, I wouldn't worry …
if training and "friendly" sparing makes you happy, I wouldn't worry about going pro. it'll come to you eventually - either you'll get interested in it, or you won't. nothing wrong with either of those, in my opinion :).
I've been studying martial arts for a total of six years now, on and off for periods, too, because of some injuries. I'm currently practicing wing chun kung fu (for almost a year now), and I've been practicing shotokan karate for 5 years during elementary school.
