If you’re good at something, never do it for free. Sure, that’s a Joker line from The Dark Knight, but don’t let the homicidal nature of the speaker detract from the reason of the message. How many of your favorite musicians or artists work — or worked — entirely for free? Not many, I assume (and it seems a safe assumption).
It’s true that people often pursue their passions simply because they’re driven to, and that they sometimes want to keep money out of the equation because they fear that it’ll sully their enthusiasm. But it doesn’t have to. You can look to get something in return for your efforts without radically changing how you view your favorite hobby.