So Johnny Jones rapes and murders his girlfriend with a firearm. More than one person was involved. He gets a deal and gets convicted for 20 years to life, and then gets paroled after 15 years for good behavior.
He served his sentence. He was paroled because the law gave him freedom. Some people would say that he is now rehabilitated. Maybe yes, maybe no. I say he should have had life with no parole in the first place. But that's just my opinion.
In any event, you say he should now be able to buy a gun. I say OMG what has our society come to!
OTOH, a kid gets in trouble because he had 2 joints in his pocket. Sure it was illegal at the time, but now it is legal. Regardless, AT THE TIME he knew it was ILLEGAL but decided to become a felon anyway. OK, let the pissant have a gun. I concede.
Obviously, 2 extremes. The problem is all the cases in between. Who makes the judgement on what level is gun worthy?