While I generally enjoy live music, I don't believe that what a person hears at a PAC or small club usually sounds very good. Concerts are fun because a person gets to sit in the room while a favorite musician interprets favorite tunes. It is the experience that people enjoy more often than the quality of the music.
There are a few audiophiles who will admit that their systems sound better than most live music. Generally they will not post it here though, for fear of being mocked and ridiculed.
Some people think the only way to determine the accuracy of their system is to use live music as their standard, but in reality this is simply impossible. The listener does not have enough information to determine the accuracy of what they heard at the show, and what they hear at home.
Everyone should attend concerts regularly, which I will be doing Saturday night, but I don't have any illusions about the ability to determine anything from it.