Lots of red flags. If you can't get rid of Facebook, Twitter, Google+, that means you are an exhibitionist, or narcissist.
Or, you are selling something. That's why I'm on Facebook and Twitter: to help sell my software and apps.
It's also much easier for me to keep in touch with relatives in remote places. I get a little of their life every day, but don't have to spend hours on the phone with everyone to do it.
Can I get rid of Facebook? Of course. Facebook didn't even exist for the first three decades of my life. I think people who have a Facebook "problem" really have mild "internet addiction" and Facebook just happens to be their poison.
FWIW, the best part about Facebook is grandma doesn't send me 43 emails a day containing jokes about the weather anymore. :)
Sure I can call them. Sure I can send them email, or paper letters, or text messages. And for specific communications, that's fine. But for just sharing what you're up to from day to day, or week to week, many people appear to prefer using Facebook, and find other methods inconvenient.
But even that is dwindling.
What I would like to do if follow people, what happens and what they post. But Facebook only gives me a fraction of what my friends publish. I'd basically have to dig up each friend by myself to see everything they've posted. So I don't even know how they are doing, except when I chat with the closest ones.
But disconnecting is hard for a human being.
I happen to know it would feel good, too. When Facebook suspended my account I wondered if this is it, then. Things got arranged back to where they were but before that I felt a wave of relief. I wouldn't have minded being free either.