There are days that I needed to be recharged emotionally and could drive to Yosemite Valley and sit on a rock and listen to the wind. Yes, there we lots of people, but the quiet and calm was respected and maintained.
Perhaps a better solution would be stronger consequences to those who violate trash, light, and sound pollution or those who damage the wildness intentionally.
But people need to have the freedom to visit these places on a whim.