When bands get forgotten about and become obsolete, so they get back together for "one more tour"... maybe release an album that doesn't hold up.
You'll buy the album and you'll go to the concert... that's when you realize it isn't ever going to be the way you remember.
I had to face the nostalgic desperation of Jane's Addiction getting back together, releasing an album, doing a tour and still not being as great as they used to be.