I have started to use FB for only humor and private groups about side projects. I got tired of all the politics and news. If it bleeds it leads keeps the mind steeped in negativity.
I am using FB the same way. The only thing left making it useful are the groups and the event calendar function. Meetup still seems mostly driven by tech or some super niche topics while FB carters to a broad audience.
I would prefer a more niche product that would take the best of FB groups and meetup together.
Its nice to have focused discussion, but it is also good to actually get together face to face.