See, the thing about Snape… I liked him up to the end of the 5th book. He was a solid character that looked mean but was really mysterious in ways, and had a habit of being in the exact place Harry didn’t want him to be. And he hated Harry, which was great because everybody else loved him even though he wasn’t that great, in my opinion, so Snape was one of the most sane characters there.
But I did not like what happened afterwards. The whole big “is Snape evil?” debate took away from his dark but sane character. In the spotlight he became pae and less interesting, in my opinion. The whole half-blood prince thing was ok, but a bit off.
SPOILER WARNING NOW: and the back story which came at the end of the last book… not my thing. It’s way too cutesy and romantic, but also painful, which I don’t like. So he was in love with Harry’s mom but caused her to die because she didn’t love him back, and then decided to her get the guy who killed her while protecting her son… sounds noble, and I guess it adds a level of complexity explaining why Snape hated Harry and all that.
Again, it destroys my initial image of a purely mean, bitter guy who just gets in the way. I liked the earlier Snape better, sorry. I can see why people would like the later Snape, he is well-built and fairly round and complex, just not my thing.