Actually, now I feel like I understand or try to understand almost all the characters. I used to dislike Faith, for example, and now I'm fascinated by her development. I'm nothing like her and still I think it's great her evolution. Maybe the only character I really hate is Justine, from Angel? She kinda represents somethings I really hate about people. And I also want to slap Xander many times, when he's too judgmental and slut-shamingful, but I also understand his emotional journey. It's just that, like you say, the heart wants what it wants.
It's prefectly true!