My boyfriend Masturbates after sex

So lately I’ve had this issue with my boyfriend not coming during sex. I decided to let him know why not. He confessed that he usually masturbates almost everyday and that causes the chances of coming very low. I told him that is a problem because I feel as if I don’t satisfy him. He told me he comes eveyday so he can sleep better, its not a form of satisfaction, its a form of falling asleep easily. I told him that it’s an addiction and he has to stop, if he uses it as a form of sleeping. Mind you, our sex is incredible but if he can’t cum then is it really enough? I just don’t like the fact that hes masturbating everyday even after we have sex sometimes. Just as a form of “sleeping quickly” let me knoe your opinions thank you!