You’ve got better odds winning the lottery than what these people are afraid of. Be smart, be savvy, be aware of your surroundings and watch out for the oblivions as you go about your business. But there’s no need to be afraid of everything around you.
Awareness prevents the vast majority of dangerous situations. Carrying is actually more likely to escalate situations into being dangerous than not. even a basic situational awareness will keep you far safer than a fire arm ever will.