Haha, no offense to anyone who has deleted their FB, but it seems that "I deleted my FB account" has become the new "I don't *do* FB." As if not "*doing*" FB was some badge of honor. I have surgeons, lawyers, CEOs, college professors, an electrical engineer, etc. among my FB friends, so I don't think it's an activity only reserved for those lower on the intelligence or socioeconomic scales. I'm a private person, and I keep my private isht private, but I enjoy being able to keep up with old friends and family across the country--people whom I would otherwise never see or hear from. I even found a long-lost, important family member through FB--for free, which would have never been the case without FB.
That said, I do recognize that FB is a platform for all sorts of negativity: attention whoorishness, narcissism, triviality, a forum through which to spread messages of hate, cyberbullying, viruses, scams, etc. People given to these behaviors are going to find an outlet or venue irrespective of FB's existence.
Like anything else in life, it has its pros and cons.
If you hate FB and deleted your account or never got involved to begin with:
If you love it and spend hours each day driving all your "friends" crazy posting each time you blink or take a breath:
(I'll just eliminate your updates from my feed--no problem)