I played D2 at launch, and then later with the expansion, but that was years ago. I donated my CD keys to some forum-posting D2 player who needed (or claimed to need) a login for his wife about two years ago, maybe three. They're probably both unemployed from playing too much D2 by now.
I tried the Titan Quest demo, which I thought was beautiful but a bit rough around the edges, particularly in the interface. Diablo 2 + expansion is still the top dog as far as I can tell. Sooner or (probably) later, a Diablo 3 or a quality Diablo clone will be released and I'll buy it.