I permanently deleted my account over a year ago. I don’t miss it. When I had it I kept much of my details private. I never put up pictures of me and my husband together, never put up pictures of my baby when she was born. My profile picture was never a personal one. I never had my relationship status on. And my pictures and profile could only be viewed by my facebook friends.
One of the cons of facebook is that if a person does put up many personal things and then something changes in their life circumstances, they have to change their whole profile to get rid of things they no longer want there. And this could mean indicating things that they would otherwise not want to tell people. For an example, I have friend who got divorced about three years ago. I realised something was wrong when she changed back to her maiden name and deleted all the pictures she had of her and her husband from her profile. And yet she did not tell anyone until a little while later. Things like this create speculation, and the more personal stuff you have on your profile, the more speculation and embarrassment you are going to invite.