I avoided verification for years because I don't like to give out high quality scans of everything someone needs to steal my identity.

Even if Mt. Gox are not crooks, and I believe they are not, they have a poor record with data security.  And they probably employ people from all over the world and may not have even met some of them.  If any of these people decided to steal some data on the way out the door then I'm looking at a lifetime of fighting identity theft issues.