A. Not having a record that prevents you from getting a gun doesn't make you a good person.
B. Most illegal guns are purchased legally, or come into the country legally. Very few of the guns that get used in crimes are smuggled into the country. Most of the time these guns are purchased by someone who can get one legally, then given to someone who can't, this is called a straw purchase. It's impossible to make guns legally available to some people without making it easier for all people to get guns.
If you banned guns from the general populace I guarantee you will see fewer guns used for crimes.
A. People are innocent untill proven guilty. I'd agree that the screening and vetting process could be a little tighter then it is now, but the fact is, the vast majority of people are sane and responsible enough to own a firearm. This is a free country, they have to assume a person isn't a psychopath or criminal unless they demonstrate otherwise.
B. There are certainly work arounds for a person to obtain a weapon illegally. There would probably be justification in a law that restricts or scrutizes an average person buying an unusual number of weapons to crack down on straw purchasing, but really the threat is overstated. Like the adage goes, if guns are outlawed, only outlaws would have guns. Just because something can be abused by criminals doesn't mean they should be kept from law abiding citizens.
If you banned guns from the general populace you might see fewer guns used for crimes 50 years down the road, but you'd certainly see an increase in violence and crime overall even then and an increase in gun violence in the short term. Plenty of examples of countries with strict gunlaws that have plenty of violent crime.
So if it prevents a bad situation from being worse, thats good, right? You shoot one person to save the lives of half a dozen people. A terrible situation became a less terrible situation.
No, it's not good. An act that is bad cannot become good when it prevents a greater bad act. Necessary, sure, Better than it could have been, definitely. Still a bad act. Killing is bad, period. Its usage can become amoral, but not moral.
And yes, deterrence and so forth. The threat of killing. Again, I'm for gun ownership and what it entails, but that does not lessen or somehow mitigate that the purpose and design for a gun is to kill. That's what they're intended to do. There is a difference between a tool and a killing tool. Guns are a tool for killing. The closest to a good thing they come to is hunting aids.
Basically, there is a difference between good and better, yanno'? The benefit of firearms lies firmly in the latter. It's a disservice to the gravity and responsibility of gun use to hold otherwise, in my opinion.
... it's still way too easy to get a concealed weapons permit, though.
I'd point out again that the vast majority of people do not buy guns for the purpose of killing anybody or even for self-defense. The most popular type of firearm Americans own and purchase are .22lr. They can be lethal, certainly, but you can hardly point to a youth model bolt action 22lr and claim it was designed for killing people. It was designed for target shooting and plinking, which is what most people do with them and where the mass market for firearms lies.
This argument I admit is probably irrelevant because handguns and whatnot are in fact designed to be lethal. (Designed for self-defense, I should say) Handguns from the perspective of shooting sports are boring, simplistic, innaccurate and lack the utility for much of anything besides concealed carry and self-defense.
That said, people have the right to self-defense. A human right, I'd assert. Owning and carrying a handgun isn't a choice to be taken lightly and I agree there should be better training to emphasis the gravity of the responsibility inheriant in carrying one. I don't carry one myself for a variety of reasons, but I think it's misguided to deny a responsible person the right to do so if they so chose.
Concealed carry permits are not sought after by criminals. Criminals don't go through legal and official channels if they want to hide a gun in their waistband, they just go and do it. I agree that the training for concealed carry permits might be a little more stringent, to make sure the applicant is indeed responsible and they should understand the legal ramifications and degree of responsibility, but making it excessively difficult for an otherwise law-abiding person to obtain one doesn't serve any purpose but to deny people their right to self-defense.