How would you respond

Anytime me and my husband get into a fight he always calls me names and says that "he can find someone so much better that will love him and treat him the way he wants to be." He wants to be catered to like a child and i refuse to be "submissive" to him. We've been married 10 years and it's every. Single. Fight. I said just do it then, go find someone else. He's mad at me right now because i didn't have sex with him last night. He said "you do things for the people you love even when you don't want to." And i said "i have the right to not have to have sex at any point that i do not want to." And he said "yeah you do but i also have the right to be really fucking pissed off when you don't do it." But he won't leave when he says shit like he could find someone else. We have 3 kids (most recent is 6 months old).