I once volunteered for about a year doing a 3d printer lab at a library. It quickly became a commitment that I would dread every other Sunday and it burned me out so I had to stop. It put me off from wanting to volunteer again. I'm generally a helpful person and don't mind sharing my time with others, but the work like commitment really ruined it for me. Maybe if I didn't have a full time job it might have been more enjoyable.
Or maybe I'm actually an awful person that lied to myself about my ability to be generous. Idk.