I know
Angel was unlikeable in S2. His obsession over Darla ruined the Fang Gang dynamic. I couldn't stand him when he fired his friends
At the same time, I felt sorry for human Darla when we found out she was sick, then she was evil again and I thought this Darla was more interesting than her human version. I was glad when she lelft though. I started to appreciate her in S3 and by the time she died, I already liked her. I think she should've appeared in more episodes in S5