I too have quit Facebook (and all social media) for long periods of time, but recently got back on. In the past I've felt pressure (from myself) to post witty things or drive up my friend counts. But now I see the value in just being a "consumer" - groups, articles, etc. Plus the added benefit of being able to see business pages, videos people send, etc.

I still agree it's crazy intrusive and addictive, I just think it's possible (though difficult) to find a middle ground.