Should I Stay or Should I Go

I am toying with the idea of leaving Facebook, for several reasons, however there is one reason I am considering staying for and that is that it's a really good way to find stuff out!

There have been several times where through Facebook I have found out that a friend or member of my family has had something significant happen; ok so I may have found out about it eventually anyway but it has meant that I have been able to respond with a message or phone call at the time when it mattered most.

I had made up my mind to leave when my sister told me of the above reason for staying and it made me consider it for myself.

So, should I stay or should I go?