I gave up Facebook for lent and didn't really miss it. The best part of Facebook is videos with cute puppies
Regarding card groups. The difference is;
1. Leon. Your vetting of membership, kicking out scammers, and doing what is necessary when things get political or ugly (same thing?). Some FB groups have this, but not all
2. Not sure the knowledge that is here is on any Facebook forum
3. The UI, with different sections is much better, the ability to search. On Facebook I see a post in the AM when I am sitting in my office, I wipe by butt and wash my hands, and I can't find the post!
If you could add a section for cute dog videos ...