James wrote:But to me at least, there's still that awful question, what would you otherwise have accomplished with the time spent? By creating this game, what good things have I taken out of the world? You can see why I didn't go into game development as a profession
It's important to note that this cuts both ways - you also have to ask the question of what potentially bad things you took out of the world, and what good things you might've brought into it (outside the game itself). I'm sure there a ton of folks who would cite the sense of community that they found, but I have even a few examples that are more concrete than that.
I grew up in a rough neighborhood, and went to schools with high levels of gang violence and very low graduation rates. Time that I spent in middle and high school on my computer, in virtual worlds (Faldon, Ultima Online, etc), was time that I was not spending getting into bad situations. In retrospect, there's a pivot point in my life's timeline right around Faldon's heyday where things could've gone a very different direction.
More concrete - it's impossible to talk about my career path without talking about Faldon. I had zero employment experience in the field I went into after college, but I got the internship as an SDET that opened the door specifically by talking about my participation in the couple of beta tests that we did for various Faldon iterations. The fact that I was already familiar with bug tracking tools, searching for edge cases, etc gave me a leg up. I've been contentedly employed at the same company for nearly 15 years, but again, my path would've been different without Faldon.
Finally, on a more subjective topic - my time as a GM (specifically, building maps and running events for the players) was really enlightening for me personally. I hadn't realized until that time that I had stories I needed to tell, or the joy that I get from organizing events.
None of this is to downplay the flipside - MMO addiction is a real, documented thing, and I think your reaction to learning about it was reasonable. But it's also not the only side of the story...