This is it, in a nutshell. I wish I had a dollar for everyone I've heard or read about, complaining about Facebook, yet they continue to use it. People treat it like it's mandatory, or something. Just dump it, already.
"I left Facebook on September 23, 2017, and not a single day has gone by when I don’t get at least a couple of emails or some SMS messages trying to get me back with notes about what friends have posted recently, or birthdays or other milestones."
Uh, sounds like you didn't actually leave Facebook, dude. To leave, try DELETING your account, instead of just deactivating it.