Under normal life conditions you cannot hear 50Hz, let alone 20Hz... 😉 on the other side of the spectrum I would say it is tough to hear over 10KHz. And... If you are able to hear out of that range, well, it is not a good thing in our modern environment. You get much more noises than you would like to.

Stopped watching politics and news in September of 2020. Don't vote anymore. Feel better.