I think your willingness to accept this as the truth is more telling of your own disposition than any of ours. Of course we have the choice.

I don't participate in Facebook, but I've yet to see any indication that I've "opted out of society offline". I have plenty of friends and regularly get invited to events (via, you know, my phone). If anything, I think opting out of social networking has only increased my value since my day-to-day activities haven't saturated the market.

And the people I go out to dinner with don't take photographs of their food or talk about what they "liked" on Facebook. Do you work for Facebook or something? Your life sounds like a commercial for it.