I don't use it either for trivial things. But for example, we are 14 friends from 4 different cities that have been planning a trip for a couple of months now. Deciding where to go. Dates, Hotel choices, flight bookings etc are discussed. People have been added along the way that weren't in to begin with. That kind of thing that's ongoing for a long time, and has input from tons of people is terrible to do in e.g. an email thread, and can't be done by just getting together. Group discussions (long, persistent) like those is what I use it for mostly.

I'd switch to anything reasonably convenient for event planing - but phone and email just aren't replacements for all scenarios.

> Why is it all of a sudden people feel like they're incapable of socializing in any form without the likes of Facebook?

I never had that feeling. But I would find it inconvenient to plan a few kinds of events. I'd create a group skype chat. Or even throw up a discourse VM. But send a mass email to a large group asking for "so, where do we go on this years trip?" I would not...