I've heard this quote a lot. Carrying a loaded weapon is a MASSIVE responsibility. It's really scary at first, but you can learn to do it effectively and safely with enough training. The training is critical.
I live in Utah, where most people own guns and a large group, myself included, have concealed carry permits. All interactions with strangers happen in that context, and we do ok. We've had some shootings. They're s seen as a reminder that individuals should carry more, not less.