I am a proud gun owner, and have multiple firearms which I have acquired legally according to the Federal laws of the US, and my State laws. I completely understand your point of view, and am glad you are going about this in a respectful manner. I get sick and tired of people on both sides of the augment that want to shove their opinion down someone else's throat. Then when it comes for them to listen to the opposing individuals side of the argument, they just blow them off.
but the thought of some drunk angry person buying a gun and turning around to shoot up the town makes me want regulations
Indeed, there are some regulations for this sort of thing. For my State, I can walk into a licensed firearm dealer, and walk out the door with a firearm in less then ten minutes. There is a form you have to fill out which includes where you live, criminal history, mental history, etc. After filling out this form, the dealer will call the ATF to preform a NICS on you. The dealer will talk on the phone with the ATF to make sure you aren't a felon (or have a history), to make sure you don't have a history of mental issues, you aren't taking any drugs for anything, check your citizenship, and a bunch of stuff.
If I were to purchase a fully automatic firearm, suppressor, or some other high grade stuff, there is even more back round checks they will do with some sort of waiting period involved. And you usually have to be in military/law enforcement to be applicable.
However with all of these laws, it doesn't prevent me from giving a firearm to a criminal (3rd party sale). A criminal can get a gun from me, someone else, or even get them imported from Mexico via blackmarket means. One of the methods that I am aware of, and it's rather simple, is via TOR. You can get to the Silk Road, and purchase illegal firearms with Bitcoins. This method is pretty common, and easy for a criminal who can't get their firearms by legal means.
With that being said, I don't believe banning firearms is in the interest of the people. This will only prevent law abiding citizens from acquire firearms, and leaving criminals with firearms. I live in a rural area, so the Police response time to my house is a little over ten minutes. This gives ample amount of time for criminals to enter my home, rape/murder my family, steal what they want, and maybe burn my house down. In this situation, I'd much rather be holding my rifle then my cellphone. I am all for firearms, and would recommend every law abiding American to have at least one. But not just owning a firearm, but with wisdom to use them. A firearm is useless unless you properly know how to use it.
But that's just my two cents. I hope I didn't step on any toes, and presented my opinion in a logical manner. Sorry if it's a long read...
(Just so I don't confuse anyone and have the ATF/FBI raid my house tomorrow, I have never sold/traded/or transferred a firearm to anyone, criminal or not.)