I like to visit a place where the criminals are so faint of heart. Having once worn both a badge and a gun, there was no shortage of individuals who considered it an invitation and a challenge to try and shove both up my butt. In my neighborhood, strength and resolve had to be proved constantly, and was never presumed. A hardened criminal is not deterred by the law, the cops, the threat of jail or death, or the sight of a gun.
That sounds like about 2% of criminals, and the stupidest ones at that.
Just saying that in some places I've been to in the last few years (Iraq, Nigeria, Angola) that having an openly carried arm keeps all but the most hardened criminals at bay and those type look for better targets.
I'd rather everyone have the choice to carry openly or concealed than for the government to make that choice of them.