Other aspects of the question:
Which are you most likely to spend $100K on first - a car or an audio system?
If the notion of a $100K audio system seems excessive, does having five $20K systems seem more excessive, less excessive or equally excessive? (main room, living room, bedroom, office and vacation home).
If you had $100K you were willing to spend on either an audio system or going to see concerts, what is the likelihood you'd actually have time to go to that many concerts? I don't have the $100K for either and I'm already out of time to go to anywhere near enough concerts to burn up $100K any time soon.
Just wonderin'