I've never played any DnD, but I've spent countless hours playing various video game RPG's from the Baldur's Gate series (based on the ADnD rules) all the way up to modern RPG's like Dragon Age and Pillars of Eternity.
A decade ago, when developers attempted to bring Dungeons & Dragons into the twenty-first century by stuffing it with rules so that it might better resemble a video game, the glue of the game, the narrative aspect that drew so many in, melted away. Players hacked monsters to death, picked up treasure, collected experience points, and coolly moved through preset challenges
Baldur's gate is almost 2 decades old, and I disagree that it did not have the narrative impact that a good DnD game could have (or maybe I'm misunderstanding the authors words). I'm not sure you can even compare what "need" Baldurs Gate satisfies for a gamer compared to DnD. I know gamers who enjoy both. I for one, am glad that computer games like BG exist.