Of course it looks better but the benefit to power ratio is too much for it to be worthwhile. You can easily see that frame rate cost switching from 1080p or even 1440p to 2160p is ridiculous on PC. There's a reason most PC gamers don't bother with it, 4K monitors aren't popular and companies like Nvidia are putting so much work into DLSS.
It's only on consoles where developers gimp their settings to low/medium, give us poor FoV and sub 30fps just so we can run games at native 4K or close to it.
This is why the "4k60fps or nothing" crowd need to relax their expectations. It's not even close to standard on $1000+ PC's. It's not going to be standard on $500 consoles, especially with the general leaps we're going to see in LOD and lighting.