How old is the Earth?

[Shell B]

How is an insult ever a valid argument?

Say I know someone who is a racist prick. Said racist prick wants to get a job as, say, a preschool teacher. I say, "You shouldn't do that because you are a racist prick." The argument is just as valid as saying, "Even if you don't teach your misguided values to those small children, you're a liability and should not seek such a profession."

It's neither here nor there. I'm just saying, insults can be quite valid, though unnecessary.