Military marriages are tough but your husband is just a douche and a hurtful person. Telling you that you're good for nothing except sex just shows that this is verbal abuse. This marriage won't make you happy. He disrespected you greatly. And this hasn't anything to do with military. It has to do with the fact that he doesn't have respect for you. You should leave this toxic situation. When he apologizes, you know he doesn't mean it as he keeps doing it over and over again.