SO GOD DAMN FUN I NAMED MY EMAIL AFTER IT.
BUY IT.
But if you didn't like the demo, you probably won't like the online much more. Online is all about getting rushed through the actual story and abusing it so you can more efficiently level up... all anyone wants to do is get to a high level and get the best items, nobody properly plays the game. Also, they use a bunch of confusing terms that'll take a month to learn (but I suppose that's on every RPG). Something fun I always wanted to do was start the game over from level 1 with a few friends and work our way up through the story without getting a higher level to rush us... but sadly it never happened.
If you have any questions about the game, ask me. I'm a D2 guru.
And to impress your friends, tell them you know someone with a pfort, pebotdz, doomz, and like 30 legits hrs. They should know what it means.