This Instagram thing operates at different levels, I live near a popular photography spot for selfies due to the awesome view. That isn't going to ever become unpopular. However, 5 - 10 years ago you wouldn't have had people doing selfies there with the posing that goes with it. People would have once taken a picture of the view, not a picture of themselves that just so happens to have the view in the back. This is what has changed with Instagram and social media. What was people's outlet for this casual narcissism before?