There are ways to live that can tick all the boxes except for one: It does not scale.
If we accept non-scaleable methods then household chickens are great. They keep pets away from gardens, it reduce the need to cut grass, and they are much better than composts. Naturally this method is limited to people who own a house and have garden/outdoor area that is suitable, and where local government allows it.
An other great but non-scalable method is to eat anything that is invasive or which population is a major threat to bio diversity, assuming one do not cultivate or raise it. There are some obvious risk of perverse incentives, but it can be utilized to benefit the environment when done right.
If we accept non-scaleable methods then household chickens are great. They keep pets away from gardens, it reduce the need to cut grass, and they are much better than composts. Naturally this method is limited to people who own a house and have garden/outdoor area that is suitable, and where local government allows it.
An other great but non-scalable method is to eat anything that is invasive or which population is a major threat to bio diversity, assuming one do not cultivate or raise it. There are some obvious risk of perverse incentives, but it can be utilized to benefit the environment when done right.