If it wasn't Diablo, I would agree with Dervacumen 100%. There are a ton of games that are dead to me because I hate being nagged by online crap. I don't have any internet on my arcade machine, and a most games I play, I don't even touch online mode. I don't want to sign up for an online account for every friggen game I get. I don't want my game to spend 2 minutes looking for updates every time I start up.
Diablo is one of those games that you sorta get to play online....even though single player is killer as well. The stupid separation rules between single player and multiplayer irked me in Diablo II. I haven't played in a few years, but I remember that they would delete your character if you didn't play for a couple months. Then if I remember right they had an open version of online multiplayer where characters wouldn't get deleted, but you couldn't play with a friend on the regular online version because they couldn't cross over. To be honest, the system it is kinda foggy to me. All I remember is getting pissed when my online character got deleted when I took a break from the game. I just stopped playing completely. For Diablo III, if they just shove everything on the same online system and don't ever delete my characters on me, I will be happy as a clam.