YouTube is the only "social network" that I can defend. I honestly think it's the very best thing to ever come out of the Web. The key to it though is using it without a Google login and with cookies disabled. This gives you the default algorithm free experience and forces you to engage your brain to think about what you want to see, rather than being spoon fed down a rabbit hole.
I am sure they are still hoovering up all my data but I hope they at least heed the signal that some people will pay for ad-free alternatives!