How quickly would you get back in touch with those you actually keep up with? And those that aren’t actually your friends just people whose memes you like? Do they really add that much to your life?
I really enjoy these chance interactions.
I will point out that there are many really good social networks that don’t also have the same problems as Facebook. Things like instant messaging groups, subreddits, Discord servers, phone calls, Imgur, etc. Every medium and platform has its drawbacks but I find that using multiple networks that aren’t FB has been a huge boon to the quality and quantity of meaningful experiences I’ve had.