The act of carrying is inherently more dangerous than not. That is an indisputable fact that you don't even need statistics to know. I am infinitely more likely to die by a firearm if it exists in the first place rather than not.
People living with handgun owners died by homicide at twice the rate of their neighbors in gun-free homes. That difference was driven largely by homicides at home, which were three times more common among people living with handgun owners.
I provided a link to evidence illustrating my point that the presence of a gun presents a greater risk of dying to a firearm. The study is about a different situation, but both deal with the presence of firearms. I would welcome evidence to the contrary rather than insults because I am engaging you here in good faith.
I say adding a gun to any situation increases the chances of a gun being used simply because it is present. More guns in more places = more opportunities for them to be used. I think that is simple logic, and again I welcome you to refute it.
This is something that requires people who carry weapons in public to be capable of providing restitution to anyone harmed by their actions. I can't see a massive harm in it other than disproportionately affecting the poor.