I disagree completely. My main monitor is at 144hz, and it's very jarring to switch to my (slightly older) MBP running at 60hz. Not having high refresh rate means this new monitor won't ever be on my short list.
I feel that while changing from 30hz to 60hz and the latter feels smooth (enough). Never used a higher refresh rate device but wonder how much more can this keep going and humans noticing.
Having used displays from 30Hz to 300Hz, I believe 120Hz vs 60Hz is easily noticeable for anyone who is aware of the differences. Higher than that is a steep point of diminishing returns in my experience.
