It isn't a deterrent. Most people come out of prison much worse and more dangerous than when they got there. It's a college for criminals. But you can't think that its a good idea to give EVERY felon the freedom to carry a gun once their sentence has been served. You obviously have some personal attachment to this issue, and I get that. But being naive to think that just because a sentence is served that access to guns is a good thing is just reckless.