"that's why we have licensing requirements and databases that ensure compliance for such things as operating cars, trucks, airplanes commercial watercraft, etc...i.e. all things that could cause serious injury or death if not responsibly handled...so too of course with firearms...yet we see very ineffective measures being applied in that arena..."
Only firearms are guaranteed as a right to you as a citizen of the United States of America. As you said, we have licensing requirements for firearms. If you don't like them, that is your issue. I agree with you that they could be better, but those regulations should be just like the ones you mentioned previously, state regulations, not federal.
"Moreover, there are no effective measures in place that can ensure that a person with psychotic tendencies but no history yet of mental illness/treatment from purchasing firearms that are exceptionally effective at killing large numbers of people in a short amount of time...i.e. 'Assault Rifles'"
Perhaps we should look into more effective measures for that, rather than just blaming the tool? When someone gets stabbed, we don't ask to ban all knives. When someone is strangled we don't ask to ban all rope. Yet when there is a shooting, except when it is black on black crime, we ask to ban all firearms. Can you tell me what an "Assault Rifle" is? I notice you like to capitalize it to make sure the AR stands out, probably just a coincidence? The semi automatic rifle is no more deadly than the semi automatic pistol until you add range, that's where the advantage is for the rifle. You can kill with either weapon.
".if there are not stringently enforced restrictions on ALL gun owners, then the 'Psycos' will bea (sic) able to get and use them...given this fact of life, the prudent approach to dramatically reducing the horror and terror of mass shootings is to deny access to ALL citizens for those particular weapons. It isn't the perfect solution, but it has already been shown to be highly effective...let's at least do that...after all, there are still many other options for hunting, target shooting and home defense."
The only people who obey restrictions are the responsible gun owners. One thing that never seemed to have been learned from prohibition is that banning something simply creates a black market for it that, shockingly, is run by criminals who don't obey restrictions. They will do nothing to keep them out of the "Psycos" hands. Maybe it takes a little longer before they go on their rampage, but they will go on it. They decide to go on it because there is something wrong with them mentally, and oddly enough it has nothing to do with the gun. No one knew that the idiot in Waukesha was going to run over a parade. Should we ban all automobiles? Or just SUVs? This is the reaction you are having, and hopefully at some point you can see how ridiculous it is.
Post the link about it being highly effective, I'll read it. There are many options for hunting, target shooting, and home defense, no one said there wasn't. Most smart gun people will tell you to get a shotgun for home defense, because high caliber handguns and rifles will go through the assailant, the walls, and possibly even into your neighbor. Especially in apartments. Buckshot is much less likely to do that, and still stop the asshat who came into your home just as well. But we can't have shotguns according to you because the military uses them.