Ask them.
They may well do so on condition of humans accepting sterilization and the computer Mark of the Beast chip implant.
JoJo, I’m sorry . . . I like several things about you . . . including your pluck.
However, your assertions are soooooo extremely askew from hard learned reality, I’m not sure I have much to offer you nor much left to enjoy in the exchanges—particularly when you tend to be so arbitrarily and willfully blind to so much evidence.
Just how I see it.
Cheers.
Ya see, Quix, this is more of the stuff which gives me trouble about the flying saucer movement. It has way too much human fears woven into it. And why would space aliens be so worried about our being sterilized? Aren't we supposed to be carrying their babies for them?