I'd say it depends on your background and availability. Most people in any of these intense tech scenes are a combination of a)young/low-commitments - in school, summer, no kids, etc. so they have the time and energy to dedicate b) grew up in these scenes so that the barrier to entry to start creating is much lower than someone like you or me trying to figure out how to mod a game for the first time and c) members of a strong community. I used to be in the fansub scene and there's something about being celebrated by your peers for achieving something that only they recognize. Same with the crack scene. I'm sure modders in these communities feel the same way when they can release something and receive so much positive feedback. It's great!