It's sad that progress must mean sadness for some. We should have better social safety net so that displacement doesn't mean despair.

While the financial/livelihood component is a major factor I think most of those affected, if asked, would say that is the least of the reasons for their sadness. It is the intangible things being lost and the end of a way of life that causes the most pain IMHO.

Indeed. Also, many things that are good in moderation are bad in excess.

You're right. I think I personally just get so incredibly upset with people who always look toward the past or are just mortified of change. I associate the sadness with their fear of change.