Nah, I don't think "interesting" has intrinsic value. The kind of "interesting" / "surprising" quality that I claim smartphones deliver better than anything in natural world, is a kind of cognitive equivalent to sugar. For the most of the history of our species, sugar was a good proxy for "nutritious", and in the same way, sensory input being interesting/surprising was a good proxy for "important for survival". Today, both sugar and interesting experiences are superstimuli - they tend to be found in most abundance in things of little value.