Women submit to male (not only husbands) demands for sexual favors when they don't really want to all the time! That doesn't make it rape.
A man has a RIGHT to demand sex from his wife in the same way a woman has a RIGHT to demand sex from her husband. The right does not create the obligation. However, if a man, or a woman, understands the ramifications of saying no too many times, either one will have sex with their spouse, technically against their will.
I appreciate your honesty.
You do understand that women have sex when they don't really want to quite often? I hope you do, otherwise you are overly romanticizing sex.
There's the buddy fuck, where it's a social obligation to a good friend.
There's the mercy fuck, where a woman just feels sorry for the poor guy.
There's the thank you fuck, for an expensive gift or night out on the town.
There's the oh please fuck, where the woman is trying to persuade her guy to give her something, take her someplace, or do something he isn't inclined to do.
There's the don't leave me fuck, where a woman notices her man eyeing someone else.
Depending on the definition of the word force, any one of the above circumstances could be rape because the woman did not actively wish to have sex, she was just using sex for her own purposes.
All of those are still different than being raped though.