I love the taste of zopiclone too. I look forward to it every night. Sometimes when I'm feeling tired but I haven't taken the pill, I think I can taste it, but it's my imagination.
I think it's a psychological addiction, except for the fact that sometimes when you stop taking it abruptly, you can't sleep. I know there aren't any withdrawals though because I sometimes sleep for a few nights without taking any. (And I feel normal.)
The problem is that I don't want to stop taking it, even though I could. That's where the addiction lies. Sometimes I like to take a pill a couple of hours before I intend to go to bed just to enjoy the feeling of it. I call it being "bitter drunk". I don't even take them for my insomnia anymore, I just take them for the feeling. It's bad.
I'm aware I'm replying to a really old post, sorry