You want to know what will drive humans to extinction?
When it becomes possible to experience virtual sex that is indistinguishable from the real thing. All the pleasure without the expense or nagging.
Such a hypothetical world might pleasure itself to death.
I don’t think it’ll actually happen though.
Just like many dope dealers studiously never touch the stuff. They’d rather live soberly, if crookedly, off the proceeds.
Also... I don’t care what Kinsey or Dr Joyce Brothers or Dr Ruth says... there is an emptiness about pleasure-only sex. It is a kind of rapture in meaninglessness.