19-01-2021, 01:25 PM
Simple answer Dave is that Facebook is a data gathering tool for sales/marketing/influencing etc. With their thanks for giving them your valuable personal info and linked knowledge to pretty much everything you do on line (and that of your linked friends) for their free use, they allow you to talk to other people. You just have to decide if you are happy with the trade.
Enjoy yourself, it's later than you think!