I also don't think you have to please him every night. It sounds a little selfish if you ask me. Maybe once a week is too little, but it should be a mutual discussion between you too and there should be and understanding.

Does it have to always be sex? There other ways for him to get his, if you don't want to do it. Oral, mutual masturbation, or somethings like that. Is that an option? Best of luck. As a husband, I know we can be dense and stubborn. We also want what we want and sometimes can't see how much it bothers our spouses. I wish you the best in finding a mutual beneficial agreement.