Well personally I only do BJJ, lift weights, and play music - I've cut other extraneous things out to focus on them, because between work, eating, and sleeping, there are only so many hours left in a week.
With all three of those things most of the satisfaction comes from progression, that is the metric by which you judge enjoyment of those pursuits - more weight, more technical knowledge of BJJ, more ability to play music I couldn't play before. Self improvement is rewarding and fun, whereas other things are just fun. I've only got so many hours to spend in my lifetime on activities, it's wise to spend them doing things that offer multiple returns.
As for Oblivian's post about the below:
-You must compete a lot then?
-Do you get to travel around quite a bit with it to different gyms?
-Do you get paid or are you sponsored?
-You must coach others?
-You must be involved in the business side of it as well?
All I would say to that is just because someone sucks at something, doesn't mean it's just a hobby for them. All of the above list suggests they're successful and stand out from the crowd, and therefore it's more than a hobby. But whether something is a hobby or not is up to personal interpretation. You might spend 15 hours a week in the gym chasing a 1200 total, but that doesn't mean it's not your passion or calling.