Why people are interesting

This list of quotes contained some thought-provoking ideas, including this:

"Someone walking down the street with absolutely no scars or calluses would look pretty odd. I suspect having a conversation with someone who'd never taken any emotional or mental damage would be even odder. The line between "experience" and "damage" is pretty thin."
-- Aliza, from the Open-Source Wish Project

Does anyone truly want to be completely healed?