Diablo 1 cannot possibily have more story than Diablo 3.
Its a sliver of what happens in the history of Sanctuary.
You might not have a fine eye for Lore, which granted not many do, but to say that there is no story when you dont even bother to look for it... is a bit ... well i'll just leave it at that.
Browse the forum, read a few posts, you'll see there is plenty to read about and learn.
Try asking questions, perhaps you'll find out that there is a very deep story behind it all.
I'd be glad to answer any questions myself.
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