The thing I like about mass multi-player is that you are
1) never alone in the world
2) unable to complete many quests alone
3) able to role-play and find others who enjoy role-playing as much
while in single-player, how much freedom the game gives you, you will be limited to just that amount of freedom.
In my opinion a great mmmorpg would be one where effectivly everyone could be a part of the bigger picture. Take WOW's realms but, that every realm would be different, terrotory would have shifted, goals, quests would be different. It does not matter who has "rolled" and won the best sword avaible in the game, but someone would have crafted it. A world that evolves on every action taken by any player.
But then again, I am daydreaming <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
And I certainly hope Diablo 3 wouldn't be an mmorpg, truly I don't care but Diablo in mmorpg form would be a disaster. talk about Item fever...
