But surely you will only see the announcement on Facebook of an engagement or a birth if you are "friends" of the person making the announcement?
An announcement in the paper will quite often be seen by those who have lost touch with an old school-friend or distant relation.
Another point is that most of us have quite a lot to do when either planning a wedding, expecting a baby, or arranging a funeral.
Placing an ad. in the paper takes one person one phone call or e-mail.
My experience of trying to contact those whom I am not in frequent contact with by phone or email is that at least three out of any number larger than ten will have changed either their phone no. or their e-mail address since I last was in touch.
Leaving me with nothing except an automated e-mail stating that my email was not able to be delivered. Worse - you text or phone a mobile phone no. and find yourself in communication with a total stranger who somehow has been awared your second cousin's former number.
This can actually be quite embarrassing.
I have more than once been greeted with, "I have no idea who you are, or what you are talking about." a statement some of those younger than I apparently do not find discourteous, but which I find extremely rude.
I had to bite my tongue hard not to reply as my grandmother would, "Good manners cost nowt, young woman!"