Pop music concerts use amplified public address systems which have no better sound than modestly-priced audio gear in the home. This makes higher end audio pointless.
In an opera or a concert hall, where all music is acoustic, you get a better idea of how to judge how well speakers, amplifiers, and sources need to sound to closely resemble what you hear live.
If there is something special, such as a Mahler symphony, or operas by composers I like or who have written something new, I go.
In choosing components, the effect of cables costing thousands of dollars or half-million-dollar turntables is comparable to the acoustic effect of the clothes you are wearing or where you are sitting.