Nutrition Facts for Computer Games

Wonderland has an interesting rating of computer games

.. the problem of games being perceived as a 'waste of time'.
The research I'm working on at the moment (I'm investigating as to whether we can publish it later on..) has bubbled up this paradox of "play" being seen as a fundamental good, and of high value, and "games" as frivolous and time-wasting, therefore of low value.

Why would this be?