I actually watch various fields for erosion effects.I would agree that there are ways to do sustainable farming and ranching. It's just that the folks that actually do that account for a tiny percentage of all such activities. Most farmers and ranchers do not use sustainable methods. I would tell you that it would be veruy hard for you to experience and observe whether your local farmers' practices are sustainable. Are you measure topsoil levels from year to year?
And when I travel, I'm always checking out fields for various practices.
This is a sign of a very disturbed mind.
I monitor our aquifer passively, noting which neighbors have difficulty in our driest years.Are you measuring bio-levels within the soil? How about the underlying aquifer you're using? How about the folks that live downstream and/or downwind from your community? The odds are slim that your community is truly practicing sustainability. This is just a statistical claim. It's of course possible that you live in an extremely rare situation.
We have a very healthy one here.