*raises hand*
I'm using ambien for almost 2 years. I started back in summer 2018 if I remember correctly so I have quite the experience with that drug. Ambien is very trippy, especially if you have no tolerance. It's weird to describe but it can cause hallucinations and as you said, some people sleepwalk. Amnesia is still a very regular experience for me, even after almost 2 years of frequent use. Like, when I wake up the next morning after taking the drug, I have a hard time remembering what I did the evening before. And then I check my chatlogs with other people and well... I can't say I'm coherent all the time. Sometimes I'd literally talk gibberish without noticing it. That's always a surprise for the next morning. It's quite funny chatting with people who just took ambien and trying to decrypt their messages. I could show you some funny screenshots of my nonsense.
Some background:
I have a very difficult relationship with sleep. I take the drugs because I suffer from severe insomnia. I have a prescription and take 10mg every night so this is medically approved in my case. I didn't increase my dosage at all during that time but I know long-term users who take more than that because of tolerance. In my opinion, it's a great drug. It helps me fall asleep quickly, it makes me slightly euphoric and just gives me a good smile before I fall asleep. If I had to rate it, I'd say it's one of the best drugs I took so far. And so helpful for insomnia. I used to lay in my bed awake the whole night due to depression and trauma. I suffered from insomnia my entire life and it started in my childhood, I suspect bullying is one of the many causes for this, considering my sleep is always haunted with nightmares. I couldn't function at all and my grades took a deep dive back in school. It was such a nightmare - not being able to fall asleep.. I was so exhausted and sleepy all the time, even in my adulthood I had a hard time doing anything. Which is why I approached my doctor and started to take this drug back in 2018 after trying out some herbal sleeping meds, which didn't work. I was so fed up with my situation. My life was a complete mess. It still is, ambien didn't really fix anything. It didn't solve the cause for my insomnia but at least it removes the symptoms. My nightmares still haunt me every night and I wake up several times in one single night. But at least I can fall asleep and that's so damn helpful. I guess, this drug is one of the few reasons why I'm even alive at this point. If I had to stop the drug tomorrow, my entire life would completely crumble again. I would lay awake in my bed until 4 or 5am, slowly grinding myself to sleep with dark, depressing thoughts and lose any structure in my day as a result of that. I couldn't go to any apppointments anymore and being social would become inherently more difficult because I'd be awake in the nights and sleep in the daytime again, as it used to be for basically my whole life. I would probably ctb within a few weeks due to desperation. So yeah, it would make leaving a lot easier.
Just be wary of dependance risks, which apparently is in the range of other benzodiapines. It's not recommended to take this drug for more than a few weeks but I'm currently taking it for almost two years, so... I'm fine and I don' plan to stop my medication anytime soon.
I hope my experience and perspective helped you.