IMHO it's just a trend, a fad running itself around contemporary American speech. It reminds me a little of the overuse of the word "awesome" to describe just about anything positive. It also reminds me of the little bit Billy Crystal used to do imitating Ricardo Montelban on SNL with his line, "You Look Marvelous". That went around and everybody was saying that for a few months 20 years ago and then it died out. People pick up on stuff like that and it becomes the thing to say for a while. I'm just sayin'... (It IS fun to say!)