Everyone I know is on Facebook still. I don't get the whole "Does anyone use it?" because it keeps getting bigger each year.
Meanwhile, I think people get over paranoid. if you don't invest your life into Facebook popularity etc. you're fine.
I use it to chat to people and occasionally post what I'm thinking or doing.
People that use it for self-acceptance (most likes, more comments etc [you know the people that are like comment on the photo, not the link

]) are the ones in trouble.
Use it as a social tool. Don't make it your social life.