"... certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness" - US Constitution (enormously grateful for the sacrifices made to keep those freedoms)
You are right that it comes down to different values. I choose to live where these things are enforced, and you can choose, if you wish, to live where they are not.
I do like the sound of [parts] your first paragraph, where people are responsible about how they spread their poo on their garden right next to my garden... however, consider that same situation with an irresponsible (or ignorant) peerson spreading their poo on their garden right next to your garden. Considering how rain and water flow works, you have a not-unlikely possibility of ingesting their poo (and enjoying whatever diseases follow).
I'm glad poo-handling is regulated.