I had a similar reaction. Many of us who spend a lot of time online interact frequently with people we've never met as it is. In 3-5 years, we could have digital followers on social networks who are indistinguishable from real people.

Imagine that they're more attractive, more flattering and more interesting - what happens next?

I can see us becoming like the animal that dry humps some false approximation of its mate, unable to tell that it's stepped away from reality and is just fulfilling its desires without procreation.