It think the biggest advantages are:
-requires less attention (in the long run), but more understand (which eventually leads to care) of the whole system, bring our attention to quality over quantity
-brings the farming practices back to viewing and working with the Earth holistically
-it is a way of planning ahead and investing in the health of the soil (and as a result, the consumer)
-brings that ecosystem back to a homeostasis, bringing stability and resiliency