Well, the second amendment in the United States has historical significance that's sorta been trampled upon already as it is. The second amendment grants US citizens the right to bare arms, to be a member of a militia. This is to keep the federal government's power in check. States are supposed to have militias that are made up of normal citizens.
The problem is that they have convinced everyone that we need a massive standing military, rather than a much smaller one, in addition to state and federal militias.
There have been many examples where they have trampled on the right to form a militia, causing horrendous events by raiding places that have stockpiled guns for self defense and the forming of militias.
So, Americans are supposed to have the right to bare arms to protect themselves and their area from the federal government as well as foreign invasion. But, due to how the government has grown so huge, and actually made the entire purpose of having those guns illegal, they sort of sit useless.
In addition to that, America has a huge problem with mental health. We have a completely private medical industry. Due to that, the majority can't afford to seek medical help unless they are in a dire situation, and then it may actually bankrupt them.
All these things work together to put us in this situation.
Guns are just a tool. A very basic tool. They're just a metal tube to control an explosion in order to project a hunk of metal in a certain direction. In America, that tool is supposed to be there to protect citizens against a federal government that long ago got out of control. So, there's a very real reason why they're supposed to be allowed...but they didn't really work.
I understand, yes. All governments seem to function via a monopoly on violence and so at their core they represent imbalance. This cannot produce balance, understandably. Mental/emotional/spiritual health and balance are absolutely the most important priority for everyone on Earth who intends to continue living here!