Their hubris makes them misjudge what a tenuous foothold humans have on this planet.
https://www.thelocal.de/20190613/how...nys-first-bike
https://www.theparisreview.org/blog/...ithout-summer/
All it might take is one volcano erupting to threaten our food supply.
We don't even have memory of our species beyond 3000 years or so.