When, in your opinion, was the golden age of human history?

The reason I ask is that something like 80% of the world today has mobile phones. Or, as another example, this source says about one in seven people don't have clean water: http://water.org/water-crisis/one-billion-affected

So that means ~85.7% of people do have access to clean water. Do you think that fraction has ever been higher in human history?