I don't know shit about farming but I still don't think there is a single true statement in what you've said. Why would a farmer not be expected to work a 40 hour week? What farmer doesn't have targets, goals, deadlines, constraints, expectations? You think agricultural workers don't depend on, use, and abuse drugs?!
This reads like, "My job is very complicated, yours is very simple."
This reads like, "My job is very complicated, yours is very simple."