Facebook and the rest of the internet is kind of like life. Put in kindness and that's mostly what you get back. Put in hostility and that's what comes back. It's a bit like looking at oneself in the mirror.
I still think it's a good tool; depending on how it's used. It does certain things well.
I think that one of the problems is that Facebook is always trying to be like "top of the world." When something reaches near market saturation on the global scale, where does one grow to?
Facebook does some things well, but whether it can stay on top of the next wave of technology; who knows?
What is the next wave? Meta?
Pressure to stay at the top can cause corruption of the basic idea. Pressure for more engagement, clicks and ultimately the money needed to keep expanding.
One asks, expanding to where when something is global in scope.
I sometimes like to call Facebook the McDonalds of the internet. It's the "go to" for interaction. There are lots of other systems on the internet. I use Flickr a lot, but nothing seems to beat Facebook for interaction.
I float lots of my ideas on Facebook and see how people react. Then I put selected ones on this blog.
Nothing is perfect, of course, but I still find Facebook quite useful.
Remember, the oil industry is useful also. Some of it is just how we use these things. The products and services that make up modern living.
If people don't like Facebook, they can read this damn blog instead.