By being a non subscriber, you risk isolating yourself from modern society. That may be OK if that doesn;t worry you.
Can honestly say that I don't feel like I'm missing out on anything much personally.
The only thing I can think of is when friends (that is actual friends, not Facebook "friends") organize a camping or 4WDing trip together on Facebook and I get a quick text message or phone call to let me know it's on. I guess I miss out on a little bit of chatter leading up to the trip, but I still get out there with my mates in the end.
Yesterday was a perfect example of why I can live happily without it.
Got a phone call early in the morning from an old surfing buddy that I haven't seen or spoken to in over 8 years. He was going to be on the sunny coast for the day and wanted to catch up for a wave.
I was busy with work and couldn't get to the beach, so he came out to my place in the afternoon, we had a couple of beers and caught up on 8 years worth of each other's lives. It was awesome!
Probably won't see him again for a few more years, but we'll have heaps more stories to tell next time we do catch up.
You may not have anything to hide, but you have plenty that other less scrupulous people may want to see... Like seeing that you are currently away from home on holidays and that you have accidentally given away your home address when you had a garage sale, or had something advertised for sale, or even shared a background shot of you house that a local low life may recognise. Maybe you showed pics of an expensive purchase like a car or boat of camper trailer, that is not so hard to remove from your property.
Absolutely agree.
Take a selfie on the way out the door and post "we're off on our 3 week holiday, only have the pet sitter coming over on Tuesdays and Thursdays to feed the cat. I hope our brand new boat is ok just parked in the driveway".
And my other favorite is job applicants.
Facebook is basically part of your resume these days.
Apply for pretty much any job today and your basically guaranteed the employer is looking at your Facebook page before they even think about calling you in for an interview.
You can have all your privacy settings on (if you choose to believe that actually helps your privacy), but you only have to 'like' a few dodgy pages or have a couple of "friends" with open pages that are full of trash and you've painted a picture of yourself for everyone else to see...