hI, I would say alot depends on how much you love him. YOu have been together along time. You are not comlpaining about your sexual relationship in general.
I think you have to way up the good and not so good things about your relationship. I think you will have to decide this one for yourself. He is not depriving you of sex.
Is your relationship not worth much, much, more than having to rate it on whether you get oral sex or not. I think you said that it was.IF he does not provide you with enough stimualtion in other ways in order to orgasm....then you may have a problem.