Pin tumbler locks are actually very simple devices. They're quite easy to disassemble. You can physically inspect the pins and see that there are only regular bottom pins (no master pins).
That being said, they're extremely easy to pick. I saw a locksmith pick one (the kind you find on your front door) in seconds with a pick gun (it "bounces" the pins to the shear line).
On a separate note, I'm posting this purely for technical interest (/. is news for nerds after all). I do agree with your argument, technical reasons aside. People have to trust professionals in subjects they're unfamiliar with, and some of those people, because they're people, will violate that trust.