This site's owner has a unhealthy obsession with tweaking Drupal. All caching ust be optimized, down to customizing each block. Every tiny field option in the database must match the schema in each module. The "pay-off" received is the all-green status page. Not an easy task, as various optional libraries need to be loaded in PHP, various options and switches must be correct, and all settings carefully adjusted.
Does anyone else notice when a site is this precisely executed? Probably not. Of course everyone notices when things aren't right, or don't work as expected. But the green Drupal status page gives a warm and fuzzy feeling that all may not be right with the world, but at this moment, all is right in this Drupal installation.