Open-carry is largely symbolic. In many cases, it actually puts you at a tactical disadvantage. Think long and hard before showing off your shootin’ iron.
There are, of course, tactical advantages to open carry as well.
You get tactical deterrence.
Both open carry and concealed carry have advantages and disadvantages.
Fixed it for you.
It's a given we all CCW for self-protection. Some of us also carry knowing it's not in our makeup to stand by and watch innocent bystanders -- maybe even strangers -- come to harm. To save our own skin while leaving others to twist in the wind. Some of us strap on our sidearm with the understanding that we might come to use it to end a fight that isn't ours. To protect someone we'd never met before. It that's you, you most assuredly want to present yourself as the Grey Man.
Inconspicuous. Non-threatening.
Why? Firstly, who draws attention draws fire.
Secondly, in military parlance, is "Freedom of Maneuver." If no one pays you any attention, if you're free to move about, and if you get really lucky, you might get the chance to shoot the bad guy in the back of the head before he knows you're there.
Whereas if you were carrying openly, you might well have been the first one to get shot.
As part of a group that's open carrying, ... maybe. Out by myself? Not a chance.
Why everyone needs to open carry. An armed society is a polite society.