Good for you. Not everyone will opt for the common good, they will abuse their choices, even deliberately...that will potentially harm too many people. That’s why sometimes it needs enforcement. You believe almost everyone would respect the common good by choice. I don’t. Because it just doesn’t happen. It could, anytime, but it doesn’t. Freedom gets abused by power...some rags to riches property rights advocate aka greedy control freak - makes sure of it. Actually, any plutocratic corruption that does exist in the UN is an example of that.
What you do in your daily life is fine, it’s admirable, even. It’s several of the ideas you espouse, that I find perplexing and problematic. Not everyone is in a position to make the choices you do, and plenty who are, don’t. Or, they just plain abuse their freedom for personal gain as much as they possibly can.