That is why I am using a beamer. I may lose in outright resolution, but not in viewing experience.
Mine is a 1080p model. I have seen 4K TVs at friends houses but I can't say I miss it. Somehow the when you watch some old non HD it still looks good when projected on a wall. Sure it is not highres but the image seems smoothen the image instead of having a pixelated or badly upscaled result. For example these last few months I have been watching a lot the ER TV show and I wasn't the least annoyed by the lower res.
If you want to see what a modern 4K TV can really do, you have to watch it with something new, shot in 4K, perhaps in HDR if the TV can render that (this works best if the TV is OLED; LCD TVs don't have the brightness to really show HDR properly). Watching the same media on your 1080p projector should look noticeably worse than your friend's 75" OLED set.
The biggest problem visible on the TNG sets is the black cardboard pieces on the consoles in the rear of the bridge, used to block reflections from the lights. Those weren't visible after conversion to NTSC, but in HD they're noticeable. I'm not a director, but I wouldn't call this a problem with a shoddy set, but rather too many assumptions made at the time about how the video would be viewed. Surely, if they were filming a theatrical movie at the time instead of a TV show, they would have simply filmed it a different way, or rigged the lighting differently to avoid this problem.
That doesn't just meant that smaller details weren't important, so they were left out. But also that if something in your set needs to fulfill a role in the story, you better make that thing big enough to be legible on an NTSC screen, instead of something more subtle.
That is exactly what I am trying to say. While I have an overall lower max res, my viewing experience is much more consistent across all kind of contents. And it never feels as crappy as upscaled content.
>If you want to see what a modern 4K TV can really do, you have to watch it with something new, shot in 4K, perhaps in HDR if the TV can render that (this works best if the TV is OLED; LCD TVs don't have the brightness to really show HDR properly). Watching the same media on your 1080p projector should look noticeably worse than your friend's 75" OLED set.
I know I've seen it at friends place. But what I mean is I don't really feel it unless I compare both side by side thus it doesn't make my viewing experience less enjoyable. Ignorance is bliss I guess. And I much prefer the immersion of having an albeit lower res projected in the full size of my living room wall than 4K res in a smaller screen. It would maybe be different if I was watching ice hockey games and trying to follow the puck but I am not.
YMMV of course.