I'm perfectly fine listening to someone else's music system at either a commercial establishment or another person's house, as long as the bass isn't too thuddy and the volume isn't too high. It's only with my stereo that I'm driven nuts if things aren't as good as I think they ought to be.
Musico-audio experience
In my never-ending quest for musical satisfaction I have posted extensively on the best way to experience recorded sound. My latest conclusion was that the perception of the music must absolutely come first, then the sound. I now feel that the musico-audio experience is the desirable goal. Great performances in less than audiophile sound excepted, the combination of good sound and good music is the path to fulfillment. This may seem obvious to many, but for those of us that suffer from audio nervosa the obsession with sound alone has too often ruined our experience.