There is a difference between deactivating and deleting Facebook.If you deactivate, you can come back.
If you delete it, your usage takes up to 90 days to be deleted completely.
https://www.surfnetkids.com/tech/3685/whats-the-difference-between-deleting-and-deactivating-facebook/
I agree. I belong to several ex Naval groups, and managed to find friends I haven't seen for 50 years, news of others, with reunions being organised.
Friends Reunited started off the trend, but Facebook went further. Like anything else, it's not the tool but how you use it.
No, but I ignored the silly quizzes which stated Only a Genius can get 10/10, or can we guess your IQ/level of education, which were the data farming apps.