For what it's worth, I approach
permaculture mostly as a toolbox to help me be a better gardener and land manager. It helps a lot that
permaculture dovetails nicely with my resource surpluses (land, sunshine, wild fruit and nut
trees) and resource shortfalls (money or inclination to buy fertilizers and pesticides, ag equipment beyond hand tools, reliable summer rain, topsoil).
Nothing wrong with being a farmer, but it's not for me. My goal is simply to improve the food productivity of our land. I'm not looking for self-sufficiency but I do like the notion of using our land to enhance our food security situation. We're getting older and slower and poorer (those trends probably won't change) and the world is getting faster, crazier, hotter, drier, weirder, more expensive, and harder to predict (those trends probably won't change either). The diverging trend lines make old age look fairly unappealing, from my middle-aged vantage. Permaculture offers me tools to claw back some measure (however small) of control and security and gastronomic pleasure.