The first rock concert I ever attended was the 1997 Quadrophenia World Tour by the Who at Nissan Pavillion with Marco and Paul. I got into an argument with my dad about whether or not it was "rational" to attend. I believe it ended with me yelling something like, "If Bach or Beethoven were in town, you'd think it was 'rational' to leave a friend's Eagle Court of Honor a little early to drive an hour to see them perform." Obviously, the concert rocked.
Having told you all that story, I can now donate the T-shirt from the concert to Good Will.