I absolutely do not see how you could make the argument that the fidelity in this is close to even that of the original Diablo. If you like the game, fine, but let's be reasonable.
EDIT: Sleep is important guys.
Are you the best type of person to talk to people like that when everything you post is passive aggressive seething? Take your own advice and be reasonable yourself, there's better ways to talk to people than asking them if it's their first game or invoking how horrible it is compared to even the original Diablo, etc.
I'll still play, but I don't feel D3 has the legs that D2 had. I played D2 for years, on and off. D3, I can't see me putting in nearly as much time. I had a real compulsion to play D2 right from the get go and I've not got that from D3. (Its still a great game though).
I don't think it will either for a few reasons. Some good, some bad. How much they expand upon things and what they do with patches will clearly be a big part but at the moment.
1.) The game just doesn't have the timesinks and padding Diablo II had. The longevity in that game was hardly all from natural, well designed things.
2.) Different structure, Diablo II was about consistent play and testbeds and amassing power whereas III, to me, comes across as beating Inferno. Currently. Thats some of the divide where some people like that concept and some, especially those who don't like grinding away at it, don't.
There's simple ways to tweak at that and to go beyond it though, as well. Fixing itemization and putting more breadth to their random event/dungeon structure and the quality of content and feedback from it is what they need to really do in the post launch window. You don't need an expansion to do these things.
When they do expand, I feel like it's going to be a really interesting situation. I like III, even moreso than II and I like Inferno and I like a lot of what they've done, but the package feels a bit anemic in 2012, and I expected a bit more than I did back in 2000 and 2002. I'm hoping the feature set and customization takes a big climb when they do go forward.
3.) It's a different era, for those of us who have played years of Diablo, Phantasy Star, WoW, Monster Hunter, what the hell ever, it's not going to stick like that again.