HDTV was when content stopped being an eyesore to me. Those DVDs were just blurry on a good screen. But I still don't think I really need 4k.
It's the point where I think we can pretty much say, okay, we are now finished with resolution increases. There's nowhere else to go. We've 100%'d that part of the tech tree. Weirdly satisfying.
Seeing the film grain detail on older movies is strangely satisfying to me. Even newer movies shot digitally are done so at 2K or 4K.
"640k ought to be enough for anybody."