Why do people think slut-shaming is a bad thing?

If you use sex for anything other than intimacy with a person you really love, don't you deserve it? Isn't it just a feminist-coined term used as an excuse to screw anything that moves?
Update: I'd do the same for a guy if he's been sleeping around like a slut, I am in no way misogynistic.
Update 2: The person who assumed I even once looked at porn is an idiot. Because I don't enjoy porn at all.
19 answers 19