Comment by crote

Screen size is pretty much irrelevant, as nobody is going to be watching it at nose-length distance to count the pixels. What matters is angular resolution: how much area does a pixel take up in your field of vision? Bigger screens are going to be further away, so they need the same resolution to provide the same quality as a smaller screen which is closer to the viewer.

Resolution-wise, it depends a lot on the kind of content you are viewing as well. If you're looking at a locally-rendered UI filled with sharp lines, 720p is going to look horrible compared to 4k. But when it comes to video you've got to take bitrate into account as well. If anything, a 4k movie with a bitrate of 3Mbps is going to look worse than a 720p movie with a bitrate of 3Mbps.

I definitely prefer 4k over 720p as well, and there's a reason my desktop setup has had a 32" 4k monitor for ages. But beyond that? I might be able to be convinced to spend a few bucks extra for 6k or 8k if my current setup dies, but anything more would be a complete waste of money - at reasonable viewing distances there's absolutely zero visual difference.

We're not going to see 10.000Hz 32k graphics in the future, simply because nobody will want to pay extra to upgrade from 7.500Hz 16k graphics. Even the "hardcore gamers" don't hate money that much.