What makes any of those things more or less valuable than playing a video game?
Volunteering, sure, but the rest are just as self indulgent as any other pass time. Just because you value them higher doesn't mean you should discount the things that other people do to enjoy themselves.
In our intensely competitive capitalist society, gaming has a low expected utility. It also doesn't usually reinforce skills that make you more employable. You also usually don't get a salary or remuneration.
The elitist in me wants to say games are little more than hi-res Skinner boxes. But properly applied, games can teach us strategy, reason, and problem solving. Is that why I play God of War? No. I play it because KRATOS SMASH
All of those activities enrich my life and help me grow as an individual. I think someone should always be learning throughout their life, and I have yet to see a video game that accomplishes that.
Volunteering, sure, but the rest are just as self indulgent as any other pass time. Just because you value them higher doesn't mean you should discount the things that other people do to enjoy themselves.