I don't have links on the tip of my fingers, but my impression is that family formation among young people is down, and its not simply a matter of symantics
I'm not even a believer that that's necessarly a terrible thing
but I do think its a real trend, not just otherwise committed people deciding that they don't need a piece of paper
I think internet == food is the right analogy, too much of certain types of internet usage seems obviously not healthy for you, I think as a culture we should make efforts to make sure that message is widely dessiminated