It is simply part of American culture. Note that was not a choice as most have their head in the sand.
Hip hip hooray, Americans believe firmly in their right to be shot dead, it is in their Constitution. The NRA believes too death is inevitable, why attempt to stop it, all eternal life schemes fail, so Americans get a gun and test your right to shoot or be shot. Stuff happens remember. Do this simple test with your gun or guns, should you be well armed. Make sure your gun is not a dud. Aim at your wall, your TV, your foot, test it on yourself, remember it is your right, written in your constitution. Get your neighbors together, form exercises with your guns, have someone run out with an AR15 with body armor. See who can shoot them first. Make sure you are all on opposite sides of the machine gun packing American NRA constitution loving gun lover with their AR15. If anyone dies, no biggee, stuff happens, you're only be adhering to your beliefs and rights. Living real those rights as they now happen so often in American massacres, upholding your god given right to bear arms. No one lives forever. You're tougher than those sissy Australians, show them your stuff. Hope all goes well. Oh and one more thing make sure your insurance is paid up. Eric of Columbine fame is with you, no gun control, he practiced what he preached. Going out in a hail of bullets is as American as apple pie.