Thanks for your comments. I still think it is complicated. By reading, discussing and observing one can learn.
Correlations are hard to interpret.
I think the following article has a well balanced reasoning:
Citing from it:
But simply owning a gun does not make an individual safer, said Davide Gristina, owner of two Krav Maga locations in New York, a franchise that provides self-defense classes and firearms training in Westchester and Orange counties.
“It’s not just about going to the store, buying a gun and putting it in your house. That’s not even close to being a responsible firearm owner,” Gristina said. “We teach them that firearms are the last resort. The only time you should resort to it is if you have no other choice and your life is at stake.”