Have you played Grim Fandango? Full Throttle? Psychonauts? Costume Quest? Are you judging based on the graphics alone? Because the reason we're nostalgic for Grim Fandango isn't the graphics. It's because it was one of the best written, engaging, immersive stories ever told in adventure game form.
And the graphics, though they might not be up to the snuff of modern games, worked well for the story being told. The world created through them was consistently rich and imaginative. Plus, there's the voice acting, which on GF was superb.
This isn't meant in offense to you, because the same would be true of myself, but even working ten hours a day for the rest of your life, you'd be hard pressed to come up with anything near as good as Grim Fandango. If all you're focused on is how detailed the graphics are, you're kind of missing the point.