Last one out, turn off the lights

The other day I reported on Geoffrey Miller's theory as to why we see no aliens out there - intelligence entertains itself to death.  It appears that Slate implicitly agree, claiming that a Playstation 3 is better than marriage.  Will the pleasure principle be the death of us all?  I still think not.  Once "civilization" hurts itself badly enough by rubbing its pleasure centers up against its technology it will find itself having to adopt a more sensible lifestyle in order to survive.  If I'm wrong, there will be no-one around to rub my nose in it anyway, so I might as well be a little optimistic.