Let us remember a few things.
One, not all countries allow firearms to the public. This is ok, it’s their governments choice, but let’s not ignore the fact that in many of these countries their violence is on par with the countries that do have weapons open to the public. Murder is murder, assault is assaults, robbery is robber, it does not matter what device is utilized.
Two, even in the countries which do not allow firearms to the public, criminals still obtain these weapons and use them against defenseless citizens. It is proof making it illegal to own a firearm in no way deters criminals, it only deters those who already follow their laws.
Three, America has a Constitutional right to own firearms, so it makes no difference what your personal opinion is, we can own them simply because we want to. There is no other justification required.
Having said this, if you do not want to carry a weapon, no one is going to force you. Should you choose to carry a firearm, own a firearm, take courses for firearm use, shoot recreationally (such as in SASS or CAS, etc.), or whatever, anyone who disparages you for this apparently feels the Constitution should bend to their whims, which is unconstitutional. As I stated in another thread, owning, carrying and using a firearm requires training and wisdom and most times the choice will be NOT to use it, even if you have the opportunity; however, in the situation you need it, have the chance to use it, and could protect innocent lives by doing so, you don’t want to be the guy thinking, “Crap, I should have a gun right now.”
Additionally, proper training teaches the goal is not to kill anyone, simply to stop the threat. Most times, this can be accomplished simply by revealing your weapon causing the coward criminal to run away. If this does not happen, shooting him rarely kills him, read the stats, it’s really educational.
Also, in America, anyone who has served in the military (to include National Guard) has extensive weapons training as well as Use of Force training to counter aggressiveness. Remember why Japan didn’t invade mainland America? If not, it was because every other house had firearms. They knew they would get whipped.