people who developed this technology were using the knowledge of people who were trying to understand how the universe works. Technology is doing, science is knowing.
It takes away ones sense of self worth. When a person figures out that they are only a wad of atoms that have no consequential impact in any sort of scale, and they realize that time is made up and is fleeting, it is hard feel important, given the knowledge that everything will die.
A deeper understanding of the universe can create a better quality of life for those living in it. It is arguable that a good, happy, short, fleeting, meaningless life is more impacting than anything else humans could offer.