Comment by Mawr

Lower latency between your input and its results appearing on the screen is exactly what a fundamental benefit is.

The resolution part is even sillier - you literally get more information per frame at higher resolutions.

Yes, the law of diminishing returns still applies, but 720p@60hz is way below the optimum. I'd estimate 4k@120hz as the low end of optimal maybe? There's some variance w.r.t the application, a first person game is going to have different requirements from a movie, but either way 720p ain't it.