This is it. I think people don't realize they've grown up and what they found funny when playing DN as a child is simply not funny anymore. After all kids are easily amused.
That and the fact that the racy humor was more of a novelty in 1996, when most FPS were in the Doom sci-fi vein of 'stoic hero shoots his way through alien/monster/etc wasteland'. Ten GTA games later, nothing really shocks us anymore.
This is it. I think people don't realize they've grown up and what they found funny when playing DN as a child is simply not funny anymore. After all kids are easily amused.