If you think about the fact that whore, slut, or especially bitch are sometimes one of the last words a woman hears before being raped, that should tell you how serious they are.
They are slurs.
They have a weight. They have a sting. They cut deep. They dehumanize.
If you respect women, you don’t use these words against them. If you do, use them, then you don’t need to waste your breath saying how much you respect women, because you’ve already proven otherwise.