I thought technology was supposed to liberate us from the fields, but it turns out that's what wealth is for, and the wealthy want us back in the fields (no more escape through special training or skill).
You were useful in the fields to the degree that was necessary for food production (sustain and grow population) and for wars (using said population to expand and extract more resources).
Once machines automate material comforts and exertion of violence (already have, to a large degree), humans become a pure loss center. Why bother with "fields" lol.
So they will keep some ready for those tasks simply to fuel that irrational desire. They will instead use the more efficient bots to enforce work on the fields rather than work the fields themselves. Or perhaps we go full Matrix and find uses for humans that robots can't properly replicate.
That's not "back in the fields" though (metaphorical or literal).