I'm really sorry, that sucks. There is some new medication that is supposed to treat it (I think I saw an ad on TV for it).
I gained about 40 pounds on it, developed dyskinesia after about 6-8 months and ended up cold turkeying off of it, but 5 years later, the movement problems still stay... Unfortunately it also destroyed my executive function too; I can barely even string together coherent thoughts and perform programming work without being overly medicated on ADHD drugs.
I know there's valbenazine and other Parkinson's drugs (selegiline works decently enough on a daily dose, but MAOIs can become dangerous in certain circumstances), but they don't solve the root problem.
Now I can barely even control my hands, legs or face and it's mildly disfiguring, but it's not like I care anymore...
I’ve never had any meaningful side effects. No sleep walking, binge eating, or anything.
I am certainly, in the clinical sense, addicted - eg if I miss a dose I certainly notice, and there is some degree of tolerance, but I’m still better off than before I went on it.
I believe the correct term is "dependent".
There is a lot of misinformation and stigma out there, so I think it's really important to distinguish between addiction (e.g. insatiable cravings), medical dependence (e.g. someone taking anti-psychotics because they will otherwise have psychotic episodes, or someone taking antidepressants because they otherwise have manic depressive episodes), and physiological dependence, where your body's receptors have up/down-regulated to adjust to a "new normal", and withdrawal symptoms may occur if treatment is stopped.
Moreover, if you're severely addicted to Z-drugs like OP, the benefits probably do outweigh the side-effects. Not every person is the same, and the cost benefit analysis differs accordingly.