After banking some karma, negative karma points don't inhibit me, whether for posting what people need to hear, or as a result of responding to downvoted posts.

In fact, negative karma when I think I'm right are extra sparkly karma points to me.

I still like to get positive rubs for a good idea or a well turned phrase, but negative karma has little effect. If I didn't mean it, I wouldn't have said it in the first place. And I'm self confident enough that disapproval of others is unlikely to convince me I'm wrong. Karma is a blunt instrument to express disapproval. Was it a stupid idea, obviously wrong? Did you dislike the tone? Disagree ideologically?