on addiction and pain meds -- read everything you can get your hands on and discuss this with your doctor. my experience is the same -- i was afraid of "addiction." i'm not an addictive personality, but had a couple in my family (hence, the fear).
the thing about using meds when you are actually in pain is that you don't get the euphoria, which is what leads to nastier psychological addiction. if you are using anything everyday, you are "dependent." there's a difference between dependence and addiction. true, using a narcotic everyday will lead to physical dependence. using coffee every day leads to dependence. if you stop, you will have phsyical symptoms. under a dotor's care you will be ramped-down just like with steriods or antidepressants. it's no big deal. going cold turkey will you sick. i've done that too. it's not the end of the world.
if you do the surgery you are going to have to do narcotics whether you like it or not. no one can deal with the pain of back surgery without pain meds. no one should have to. narcotics do exactly what they are supposed to do and, when used correctly, are safe and necessary.
having said all that -- if you have a posterior vertebra compressing a disc and pressing against nerves, you have to address that "mechanical" problem. surgery is one option. physical therapy is another. cobra pose, if you can do it, is something that has helped me with posterior disc pooching. my discs are fusing naturally as my discs degenerate. otherwise i'd be looking at PLIF.
(on my very best days, i can only get into the third position here.)
but please consider drug therapy. speaking for myself, it's returned some amount of quality to an otherwise unbearable life in pain. i've gone thru hell with pain and i am truly thankful for the ability to get free from it for a few hours a day (right now, that's all i ask). there's a range of drug therapies, now. synthetic optiates, patches, antidepressants and steroids.
good luck! big :hug: