Exactly! It makes no sense to switch to something else if all your friends are still on Facebook.
Also, who knows if the app you switch to will have less problems in future than Facebook does now.
Wasn’t that what people said about MySpace? And business analysts see weakness in fb for that reason too, they’re vulnerable. Just look at snap’s users leaving to see, stickiness works both ways: as soon as something better exists, people switch quickly
I think the issue isn't about finding alternatives to it, it's convincing the people completely entangled in the Facebook ecosystem why they should jump ship. Another issue comes with, a number of people don't use Facebook, but they use Instagram, which is just a rebranding of the same evil at this point. Getting people to switch from that would prove tough.