I watched the first part of the remake, and was sort of indifferent to it. I might watch the second part one of these days, but I'm not pressed about it.
I preferred the 1984 original. However, having seen it first, and years ago, I wonder if that might have distorted my feelings towards the remake. To me, the 1984 version has sort of an "expensive, but dated" look to it. Even by 1984 standards, some of the special effects were pretty bad. However, it gives me the feeling of an expensive movie that went over budget, so they couldn't do everything they wanted, fx-wise. Modern movies tend to be backed by big budgets, and helped by CGI effects. You can do a lot more with CGI than you can with matte paintings and miniatures, or even full-scale mock-ups. But the downside is that you run the risk of the finished product looking like a video game. I also remember the characters in the original seeming more interesting and colorful. Sometimes a bit over-the-top, a bit campy even, but definitely more memorable. In contrast I just don't remember anything in the remake standing out as all that memorable. And while the first one wasn't exactly action-packed compared to, say, Star Wars, the remake just seemed more padded, drawn-out, and slower.
I wonder though, if you took someone who had never seen either version, and showed them the new one first, which one they'd like better? I think sometimes, if you take two similar things (movies, or whatever), you simply enjoy the first one you experience more than the second.
Not to get too philosophical about it, but I think this might be one reason why I don't mind the later Bewitched episodes with Darrin #2. I was two years old when the show was canceled, so I don't remember it first-run. But it's been in endless repeats for my entire life, so I'm just used to there being two Darrins, and it doesn't bother me.
And in the final season, since they knew it was going to be the last, they simply threw it into the "Death Slot" against "All in the Family" and put the bare minimum into it. Some of the episodes were even recycled plots, often word-for-word, from earlier black and white episodes. However, when I was a kid they didn't show the B&W episodes in reruns. I didn't see any of them until I was in my 20s. I think Nick at Nite showed them. And now Antenna TV shows them, albeit this last time around, they showed colorized versions of the first two seasons.
But, I have to admit, with some of those recycled episodes, I actually prefer the remake to the original. And I think that's simply because, while it didn't actually come first, I was exposed to it first.
So, I wonder if I'd never seen the 1984 Dune, perhaps my perception of the remake would be higher? But I've also noticed that now, in my 50's, whenever I see a new movie, it just doesn't leave a lasting impression on me, like movies did when I was younger. So maybe there's a bit of the "Rose Tinted Glasses" at play.
