There are people to pick crops. The able-bodied who are on assistance. If you're able-bodied, work, go to school or don't eat.You can't run them out of the country then complain that there is nobody to do the picking of crops. Can't have it both ways.
I've found that in my own life, hunger has been a great motivator. Then again, I was taught that it's better to die than to accept freebies.