Stanford anthropologist T.M. Luhrmann spent two years at an evangelical church called the Vineyard then describes her impressions in her book "When God Talks Back".
I don't know, to me this is people making things up that are useful to them at the moment. It's interesting that at one point she stated something to the effect that "religion became a buyer's market". Also, I'm not so convinced that "God" has become nice. Maybe to these people their god is nice, but there are lots of people out there whose god is very controlling and mean.