Hi Outlaw,
I've been on Xanax for 7 years, I usually stay around .5 mgs a day, sometimes .75. I have liver tests done once a year, which may ease your mind. I haven't heard of any damage it can do, it's just addictive and when you do go off, you should do it very slowly over several months, preferably under the supervision of a doctor.
I worry about being on it as long as I have too. I proably need to go ahead and take an SSRI instead of depending on the Xanax so much.
My friend has been on Xanax 8 years, I would hope the doctor would say something if it is dangerous on long term use, but personally I have never heard that.
I too, am afraid of everything, so I can understand where you are coming from.
Becky