Over the weekend, I spent some time watching my sons pretend they were army men, teenage mutant Ninja turtles, as well as Clones training under Count Dooku. Role playing is part of growing up. And, in many ways, we never grow out of it. Fantasy Football leagues are very popular with adults, said Keith McCurdy, co-founder and CEO of Vivity.

Vivaty, a startup that raised $9.2 million from Kleiner Perkins and Mohr Davidow last fall, is distributing 3D worlds on top of existing platforms, such as Facebook and AIM.

In this interview (the third in a three-part series with Keith), we discuss whether virtual worlds are changing the way our children are socializing. We also talk about the evolution of virtual worlds, starting with Ultima Online, having launched in 1997, it was one of the first successful massively multiplayer online role-playing game.  

From our conversation, you definitely get the sense that Keith believes virtual worlds help people slow down from their very fast-paced lives. Checking email, sending an IM, talking on the cell phone, surfing the Net and TV. These activities make for very short and distracted experiences. Virtual worlds engage people. They "immerse" them into another world, he said. 

Indeed, immersion into another character is nothing new. And, it may be the case that in a world where our minds are thinking of 10 million things at a time, maybe immersion becomes an increasingly valuable thing.

"Virtual worlds are second nature," said Keith. "It's not a foreign idea to have a character."

Sometimes, it's just good to take it down a notch.