Why does FM radio sound so good?

I don't listen to a lot of FM these days. But when I do it sounds as 'clean' as ever. It does not have the frequency response of a class vinyl or even the best digital. So I figure as I age, I don't hear much more that what FM is capable of anyway. But the best stations, actually have some depth and space to them. 
In contrast to the horrid compression of satellite broadcasts. 

Classical and college radio sounds excellent thru my home system; clean is a good way to describe it. I’m using a vintage Denon tuner.
Rock stations sound good as well, except for the loud compressed bass.

FM music is soo good before digital.

Public radio stations sound fantastic. Mainstream Rock or whatever still compress everything to death. I swear a station the next town over adds reverb to their content. 

A lot has to do with the fact that most of us grew up on/with the sound of FM and it gives us the warm and fuzzies, provoking lots of positive feelings that lie deep down within us. Nostalgia, if you wish, and it’s a good thing.

All the best,
Nonoise