This is another of those topics which applies to most, if not all, tabletop RPGs to some extent, but it's worth discussing in terms of Dungeons and Dragons just because more people play that game.
Let's set this up.
It's not like the Warcraft setting is a stranger to death.
I don't mean player death.
For once, we aren't talking the nebulous idea of the "class fantasy." Instead, we're going to talk about fantasy as a genre.