Have ya ... seen any evidence they are HURTING us?”
Nothing conclusive. Still a mystery.
Based on history, when a superior group confronts a backward one, the backward one is vanquished and used for gain such as labor, resources or strategic military help. Aborigines and Africans did not conquer all the continents of the world and blaze trails in medicine, science and technological invention and wealth building.
The others did and if we travel to see the people still living in stone age conditions with mud floors, starvation and women dying in childbirth we can see the difference.
We may be talking about aliens thousands or millions of years ahead of our level of technological advances.
Marconi’s friends reported him to authorities for being mentally ill because he listened to friends who weren’t in the room by using his new “radio” device. Not one journalist invited to Kitty Hawk showed up to see the “hoax” of the first heavier than air manned flight by the Wright Brothers.
We don’t believe aliens can divide or expand the spaces between molecules to walk through a wall, or alter time in front of a vehicle to reach it quickly such as 10 times faster than any vehicle we can build. Then stop in midair, move at a right angle and shoot off into the distance in .1 second.
We had better hope the designers of these UFOs are on our side. Or we will be swept aside like ants on an anthill in the way of a shopping center being constructed.