Nope. I stopped liking Amy in Season Two, when she becomes a witch. I'm not sure what the writing staff was going for with this. Was it their way of showing how, sometimes, we become our parents? I mean, Amy was living a seemingly ordinary life with her father. After the hell her mother put her through why on earth would she turn to magic in the first place? The power? I don't know. I wasn't really fond of Amy as a character, and I find that you honestly don't miss her for the next seasons. I know I had an "oh yea, they kept her as a rat" reaction to seeing her return.
The whole "magic is a drug"bit in season six was too blatant and a tad un-Joss-like way to approach the series. For me Willow's "addiction" to magic was evident from season two onwards, and didn't require an actual "omg, Willow's seeing a drug dealer for her daily fix of magics!" It seemed forced. If they actually wanted to approach the situation, why need a drug dealer at all?😕 Why not just have Amy turn her over to the dark side? 😕 This is a major reason for my disliking season six--but that's a separate topic.
I guess my answer is "no". I disliked Amy's character in season two, and I'm a little short of hating her in season six. She wasn't needed.