Americans have guns to protect themselves in case their government goes rogue. Kinda like it has already. I never understood this either at first. But their 2nd amendment should read, "their responsibility" to bear arms. Rather than their right. The USA is a fucked up new system if you will. They've had treasonous governments in the past.
Ps. If Americans didn't all have guns, we would already be living in a 1 world government! Hence why the government wants to disarm them. Less resistance.
Hope this helps