This. Division of labor and specialization, especially reducing the labor input required for agriculture, is what civilization is built off of. We wouldn't have bitcoin if we didn't have mass produced agriculture.

That being said, I can't agree with some of your later comments. You seem to put too much emphasis on the market value of a person's time... but there are many things that aren't priced by the market that can guide a person's actions. For example, there is enormous social benefit to growing your own food and gifting it to neighbors. Not everything should be evaluated based on the market value of the opportunity cost.