I tend to think that, eventually, there will be an entire generation who grew up with ONLY the 21st-century reboots/remakes, and will look on them fondly. There's a huge generation who prefer the Star Wars prequels to the original trilogy, not because they look on them as superior films, but because they came out when they were children and they saw them first.

The 80's was a great period for remakes/updates because that's when practical effects really hit their peak, and it became possible to show and do so much more, especially when you're talking about science fiction and horror, where often the effects are the largest piece of the budget.

CGI isn't all bad, of course. There's a reason Terminator 2 is looked upon as such a fabulous movie, but mainly it's because Cameron was forced to limit himself to using the computer-generated stuff only when it was absolutely necessary. Everything else, the explosions, the nightmare sequences, the cut scene where they reset the T-800's CPU, the gun battles and car crashes, they're all still done with practical effects. Same with films like Jurassic Park and even The Lost World to an extent. We've seen what happens when everything is computer animated, and the results just aren't as magical. :)