Economics and doomed jobs
There are a great many people in this world — particularly in third-world countries — that spend their entire lives performing jobs that are dangerous, labour-intensive, unhealthy, and altogether better-suited for machines. I've often heard the argument that "it's better that they do what they do, than that they have no job at all". After visiting the hellish mines of Potosí in Bolivia, I disagree with this argument more strongly than ever. I'm now 100% convinced that it's better for jobs as atrocious as this to disappear from the face of the Earth; and that it's better for those affected to become unemployed and to face economic hardship in the short-term, while eventually finding newer and better jobs; than to continue in their doomed and unpleasant occupations forever.