If Facebook stopped working today, would anything happen? Besides people having a lot of new free time on on their hands?

heaps of small venues would see their online presence deleted overnight. the product fits a use case even if you don't like it.

Yes, people would seek out those services elsewhere because clearly there's a demand for them. I find this attitude very paternalistic. Why do you care how other people choose to spend their time? Is it the technology you don't like, or the people who use it?