The point is the escalation of carrying to the point that people presume that a person may be armed so instead of an armed robbery it escalates into a murder and robbery. There is a lot of data to support this. The more who carry the faster the criminals who carry feel they need to resort to using the weapon before they are killed first. Many studies have looked at this over the years. The idea that the public is protected becuase some people feel that they want to carry and can double as a vigilante is absoutely bogus. The more who carry the more violent the society is and the more likely that people will shoot proactively rather than assume that their weapon just being waved around would provide an advantage.
I believe you have seen studies like you say you did but I have a hard time believing them. There are a number of US cities which border Canadian cities that have lower homicide rates.
The Homicide rate is lower in US states with the least restrictions on firearms ownership and carry, lots of stats and studies highlighting that.
Private gun ownership in the US has almost doubledsince 2007 (I think I recall reading it's up to 12 million now?) and violent crimes and homicides have been dropping steadily.
As for the idea that crimes get stopped in the US -- exactly what kind of crime? So some people protect their property perhaps but in exchange we have a violent society with way more gun deaths. US have the most guns available and they ahve the most deaths so it stands to reason the extra escalation in weaponry is not turning out well.
See above. The US doesn't have the most deaths. I believe they were 5th for 2015 but of course that all depends on where you're referencing but no studies I've seen indicate they're the worst.
It is based on the US radical individualism cult founded on the idea that it is okay if more other people have guns becuase I can handle myself and shoot first. Of course when many think this way you only have more gun deaths. Over all, the number of people dying by the gun increases with the number of guns.
Again this feels almost like you're blaming the victim. Criminals are more violent because they expect their victims to be armed. As I mentioned states with the least restrictions on firearm ownership (read: more people are open or conceal carrying) are the states with the least amount of violent crime and homicide.