The thing that epitomizes City of Heroes for me above everything else comes from an ITF where a mother and her five-year-old son were on our team, with the kid carrying his weight in the fights, and the mom said that CoH was the only online game that she had no qualms about letting her son play unsupervised, because of what the playerbase was like. And in every other MMO I've played, there is a visible level of vitriol in the chat channels, the official forums, the reddits, and where open-world PvP is enabled, a population of yahoos whose sole metric for how skilled they are as a player is how fast their level-capped character in best-in-slot gear can gank characters fresh out of the tutorial area. It's a sad reflection on other MMOs.