In many states the only criteria is "can legally own a gun" (so not a felon). I think it's more a matter of contientiousness; people who bother getting the perm

In many states the only criteria is "can legally own a gun" (so not a felon). I think it's more a matter of contientiousness; people who bother getting the permit (where required) are affirmatively demonstrating the wish to follow the law.