I find Facebook useful, at times. I'm a member of some groups that are pretty neat. I get most of the "Weird History" notes from FB. My buddy uses Instagram for his photos, I rarely check it, I don't really get it either. I post some photos on FB at times. They seem to end up on Instagram without doing anything, some of them.
I suspect for most here if Twitter "twittered out" it would not change our lives at all. (And I thought Musk's purchase was mostly a vanity thing, an impulse, when he could have done a lot more with the $44 billion.)