You can doubt, that is your prerogative. The closed nature of the aircraft induced twice as more fear than in a crowded open area. Also, even if we assume eve

You can doubt, that is your prerogative. The closed nature of the aircraft induced twice as more fear than in a crowded open area. Also, even if we assume everyone is rational, the person holding the prohibited object is not guaranteed to be rational. The difficulty of bringing a rifle is exactly the security check(also mocked as security theatre here), and anyone willing to risk a destructive object has zero incentive to bring it through security checks because they are discouraged by the security theatre, finally the risk is well worth in the air or blowing up something close to a massively valuable(i.e an aircraft).