You can correct bugs in a robot's operation software, you cannot correct a human. A human is subject to fatigue and emotions whereas a robot never tires, never has a bad day, always operates at peak efficiency. Humans can learn and improve efficiency and accuracy, but this investment is lost when the human breaks down or departs. Robotic can be continuously improved, continuously made more efficient, more reliable. Each new model better than its predecessor. As a human improves their skills they demand better compensation. As technological improvements are made, robots become cheaper to operate, cheaper to maintain, cheaper to manufacture.
If you as an unskilled or low-skilled laborer are taking comfort in the fact that the state-of-the-art is not up to the task of doing your job you are deluding yourself. The more trouble you are for your employer, the more they will seek out and invest in your replacement. Humanity may beg for comfortable wages and work conditions, but ultimately that begging will only lead to the unemployment line. You as an employee are not as valuable as you think you are. If that statement angers you or gives you cause for despair then stop blaming your employer and do something about it. If your ambitions in life are no higher than shoveling boxes all day like a robot expect to be treated like one.
I'd be careful with how you word things. Ethanol is not in an of itself evil and purely political. Ethanol derived from renewable biological processes has merit in as much as it closes the carbon loop. The trouble comes when politics steps in and subsidizes source material whose production is every bit, if not more harmful than the petroleum the ethanol is supposed to be replacing.
If you want to make actual progress against environmental destruction you need to capture the external costs in the price people pay. Innovation will then be driven to that which costs the least.