I can hear up to 17kHz with a test tone, but if frequencies above 14kHz are cut off while listening to real music, it doesn't impact my enjoyment at all.
We seemingly have a similar frequency threshold, but I see things a bit differently. While above 14K there might not be a lot of ´musical information´, but I do notice the difference of a low-pass filter in this region and I would argue that cutting it off might lead to misjudgments when listening to a recording, and may it be just some ´air´ missing.
I noticed that I am particularly sensitive to problems in the 10-13K region, being eager to correct even slightest problems with what seems to be harmonics of sibilants in this band.