You sound like me. I have now recently deleted my Facebook account. I recently realised that I was not participating, only lurking, mainly because I no longer trust Facebook with my data (I've spoken previously about soft-deletes archiving versus physical deletes). I also no longer trust the NSA Facebook relationship post-PRISM.

If there are more people like me, then I truly fear for Facebook's long term success. (Disclaimer: I still own Facebook stock).