Should I get rid of facebook?
Just don't use it, if you don't want. Don't burn any bridges unless you know carpentry.
Absolutely not!! Reconnected with quite a few long-lost friends though it ! As for your details, it is a bit like books: Only lend those you are prepared never to see again - i.e. just give those details you do not mind the whole world knowing (Your weight, your favourite food, your hatred of fox hunters etc...), especially given that apart from your friends - who already know, the world could not care less !