Twitter is far too angry and I have to ration it. Same with Mastodon. People are outraged all the time. This is probably due to the people I follow rather than anything built into the platforms. I am not motivated to find other people to follow. I’ve got other things to do.
On the other hand, I find Facebook to be mostly a positive place, and I like it.
This is completely the opposite of the common wisdom among the extremely online millennials who I follow. They’re all convinced that Mastodon, the Fediverse, and Discord are islands of sunshine and Facebook is a iniquitous pit of Boomers doing nothing but swapping Qanon theories and minion memes.