Same with me as Faithfull Witness, was on FB nearly 24/7... until we had no internet for a month and I realised that I wasn't really living. So I deactivated my account. I still have an anonymous account on a fictitious name, but no friends in it... it's mainly to check out some DIY-pages every now and then for new inspiration, so I use that once a week at the most and sometime look up people I've known in the past (specially when one of my children tells me things like 'did you know brother so-and-so is gay? Look at his FB!').
But I have to be aware, 'cause the same danger lies in this forum... I keep checking if there are new topics, new postings... so I'm sort of an undisciplined addict if I'm not careful enough...