To those who don't understand the USA and our stance on guns/firearms/weapons. The very people who fought the British and fought over the framing of the Constitution and the first ten amendments was that these very men also saw that there might come a day when the citizens of this country might have the need to rise up against that government. They also saw the possibility that is the people had their own weapons, that alone might prevent the need for them to ever have to rise up and defend themselves from their government.
They saw that the people might someday need to rise up just as they had. And if that day ever were to come they wanted those cictzens to be able to.
The first ten amendments were put in because several groups felt that they had reason to NOT TRUST the government. Those amendments were NOT considered to be a grant of rights, for they believed those rights were inherent to all men,(all men are endowed by there creator with certain inalienable rights...) but rather to be a written safeguard because they did not trust any government of men to be trusted. In other words, they had those first ten amendments added because they understood human nature and did not trust those in power to not become tyrants. And the whole world has seen just how easy it is for tyrants to rise up.
Unlike Switzerland, in the US we don't require anyone to have a firearm. And it is interesting to note that the cities with the strictest gun laws are also the cities with the highest number of gun crimes. Why? No-one wants to explain that...