You're doing it to make the character as specific as possible, so that it's a specific individual that you're talking about, not that whole class of people.
You love all your characters, even the ridiculous ones. You have to on some level; they're your weird creations in some kind of way. I don't even know how you approach the process of conceiving the characters if in a sense you hated them. It's just absurd.
The characters are the result of two things-first, we elaborate them into fairly well-defined people through their dialogue, then they happen all over again, when the actor interprets them.