Earlier quoted context omitted.
I have a great time on FB/Messenger. It's a tool, it's up to everybody to use it in a way that is a net positive for them. I have friends/acquintances in 10+ cities, and it's a great way to keep in touch. As you mention, this "way" is very different then if we would meet in person, but that is out of the question, as we are separated by 1,000 - 10,000 km. The alternative, on average, is not to hear anything about the…
If only there were other ways to send messages to people over the internet
Other messaging services: tell someone your username on it (when you ever happen to run into them again, I guess.)
Facebook Messenger: search for their name on Facebook, find the one with the right profile picture, hit "send message."
Facebook is the modern-day White Pages, except for the entire planet.
And that's the part that makes it so hard to "quit Facebook": you're essentially erasing your entry from said White Pages, so people that want to connect to you by name can no longer do so (unless you're famous enough for Google to pull up your Twitter when people search your name; or you know enough about SEO for people to find your personal-brand website/blog when people search your name.)