Why do people make facebook profiles for their children/babies?

[Q]

As someone without children, I prefer for my parenting friends to create new profiles for their kids. This way, the people who don't want minute-to-minute updates about smiles and diapers (like me) can still interact with these parents in a baby-free environment. Anyone who wants those updates can add the kids separately.

In terms of security, the pictures and information are ones they would post would be on their own pages anyhow, so it's not a greater lack of security; it's the same lack of security. I agree that they should be cautious about this, but that's true in general.