For some reason I've often been focused on what the benefit from doing an activity is. For pure enjoyment I would just consume movies or video games. Somehow I missed the idea that there are many activities that might be beneficial, but that even without the benefits would be enjoyable activities to engage in.

For example many programming tasks are enjoyable enough in themselves, even if they result in no outcome. Maybe that's why "this guy made $10 million with this app"-type of stories might be harmful, as they makes you forget that programming in itself is often an enjoyable task, never mind the other rewards.

Besides programming, I would say messing around with music creation programs (Ableton Live is my favorite) and 3D modeling software (Blender) can be as much fun as gaming, even if you aren't any good. I've also experimented with drawing, but I find that a bit harder to enjoy while having no skill. Maybe there is a base level of competence you need to attain before an activity starts being enjoyable for its own sake.