Replace what exactly? The full, rich experience of cherishing another human being? I think not. Perhaps, they will replace the women from porn fevered fantasies, but they will never replace flesh and blood. Will people settle for that? Of course they will. They do now. Strippers, porn, and prostitutes are all cheap imitations. I get it. Real woman and real relationships are hard. They can be demanding, have opinions, and don't come with an easy gui interface, but after 30 years of fidelous marriage, I still prefer the real thing. Don't settle for anything less guys.