No matter how many devices are invented people will always have a need to be touched or share experiences with another.
In the U.S. over 2 million weddings still take place each year!
People at the very least will continue to date, have sex, & marry.
Having said that most of the devices being invented contain a component of (connecting with others at least virtually) as oppose to playing solitaire.
Very few people want to be completely left alone to their own devices (forever). :)