Comment by ljchen

Agreed. "Open sourcing" means you do it for free but your work benefits others. And you may have an opportunity to pass the torch to others. For hobbies you keep it to yourself. I played an instrument for many years in spare time. I enjoyed it a lot. I eventually gave up, because my life changed and many other things popped up. On reflection, I still think it was an intersting experince for all those years. But I don't feel anything for it now.