Thanks for the video links. We could harvest our crop like that, but what would Congress do for votes (sarcasm), big business for cheap labor (cost of machine probably $100,000 versus $5.00 - $7.00 for illegal immigrants), and don't forget the lobbyists who would be unemployed due to not having their "special interests".
I've worked plenty of "nasty" jobs and it didn't make me feel degraded. When your hungry you'll just about work at anything...even picking produce (which definitely is not the worst job in the world).
I picked berries to earn money from 12-14 years old. I enjoyed it!
Of course I grew up on a farm, so it was the kind of thing that you did, to earn money.
Of course now, child labor laws don't allow kids to do farm work, unless it's on your own family farm.