I think we'll separate into almost two distinct species with a worker human that is smaller and squat with a lower intelligence then a genetically superior super human that will subjugate the workers in their quest for galactic supremacy. The superior species will die from disease due to lack of genetic variation and the worker species will then just decline without any ability to shape their own destiny.
Sounds like something from an Asimov series.
Transcendance will end our humanity, hopefully.
I think you'll find thats from H.G. Wells: The Time Machine; The Morlocks and the Eloi. Wells was a socialist who believed the working classes were doomed to a future of debased humanity slaving for the priveliged elite.
/scifi nerd lesson.
If you're going to do kinky stuff to people without their permission, then do it to people who simply won't be believed if they report it. They're clever, these aliens. Just like Jimmy Saville.
gamma ray burst,