I think my first mobile phone was in 1999...
Surely (and I don't mean to be rude) but you're the problem, not the social media? I'm on most networks, but I don't think I see anyone's lunch, pretty much ever. I don't get told when they arrive at places.
I never really get this whole 'I hate Facebook because it saps all of my time.' That's 'you' not Facebook. I'm on Facebook and go on it maybe a couple of times a week, probably for no longer than 2 or 3 minutes... It doesn't sap time, you decide to spend that time on it, but people love to blame FB.
Definitely wouldn't go back to without a mobile. Even that seems a silly question. If you think it was better... sell you're phone! It's your choice!