You are basically right, CK, not everyone is stable enough to own a gun. Problem is that unstable people should know that of themselves and opt out of owning one of their own accord:
THE FATAL FLAW in your argument is that if it is made a privilege instead of a right, who does that put in charge of your owning a gun but the government--- the very people with the most to lose and the greatest interest in your not having a gun, which is why it was made a right and not a privilege in the first place!
That is like putting the Fox in charge of the chicken coup.
Just look at the first thing the government does when put in charge of anything (like healthcare):
- Do they put patient health ahead first?
- Nope, they just cut the benefits to save money for themselves.