Because you can pull someone in and charge them with illegal possession of a weapon before they murder someone. Currently, a childish understanding of an Amendment that is frankly irrelevant in this century anyway means we have to let nutters run around with weapons and wait until someone is dead or seriously injured before locking them up.
And this black and white dichotomy between "criminals" and "law abiding citizens" is nonsense. Studies show the "law abiding majority" is a myth. The majority of adults regularly break, or have broken, the law. Recreational drug use, speeding, tax evasion, petty theft...the majority actually don't abide by the law, only by the laws they agree with.
No you can't, we have anti-cocaine laws where it's completely illegal to have it. They can drag them in and change them with posession, right? If that system works, then why is it still on the streets and available?...there goes your theory about how making something illegal magically removes it altogether. The same can be said for alcohol and prostitution. The government tried to outlaw those things, but it didn't work, did it.
If you want to view the constitution as irrelevent in this century, then I guess you're okay with taking away free speech, freedom of petition, and freedom of religion since those were all concepts for our government drafted at the same time by the same people. Don't pick and choose which ones you like, then say that the rest no longer apply to this era.
As far as the "nutters" are concerned, must be lingo I'm not familiar with. You make it sound as if gun owners only own them for their own violent tendancies which simply isn't the case. I notice that when you went on your rant to attempt to debunk the law abiding majority "myth" as you called it, you tossed out a list of offenses that have nothing to do in any way with gun ownership. While you're correct that most people have exceeded the speed limit and tried weed, that hardly supports your argument that everyone who has a gun is itching to kill someone.
What you're saying sounds like typical liberal propaganda to me:
1) Target the group you oppose (in this case gun owners)
2) Find the worst possible person you can that happens to be in that group (in this case people who commit random murder)
3) Proceed to lump everyone in step 1 with step 2
4) Provide irrelevent statistics about completely unrelated crimes
5) Use the Red Herring and Slippery Slope techniques
6) Change the meaning of The Constitution to make it say what you want according to your whims and preferences
Here's the text:
A well regulated militia being necessary to the security of a free state, the right of the people to keep and bear arms shall not be infringed
No where in this text is there a clause that says "until 1950" or "unless a guy on a message board disagrees with it" or "unless .005% of the population doesn't know how to use them responsibly"