insomnia
"Simple, I started taking Ambien in 2001 when it was prescribed for me by my orthopedic MD for a swollen knee so I could sleep, then I found out it was not habit forming, other than psychological.  I am a professor and I have trouble shutting down my mind at night.  I have used it daily since that time, never have needed more than 5-10mg, never sleep walk, do my best work in the morning at my office before classes, have gone a few days when I have run out and am not somewhere I can refill.  Doesn't worry me, I just accept I am not going to sleep well and I don't, but I sleep some.  I don't get anxious about it.  I am now 71, still teaching full time, no sign of weak bones.  Why on earth would I want to stop taking Ambien?"