I don't know of anyone who hasn't struggled in their marriage, at one point or another, with what it 'should' be like...to the point that they wondered if it should also be 'over'. No one.
I have learned, however, of many people who never let on that this happens...which seems to leave them and others wondering what is wrong with their situation, or more especially, what is wrong with their partner.
The greater discovery and truth, though, is that until this road is traveled, and to some degree with others, the greater problem of me is not identified. And, that discovery, is the start to something that includes struggle, but also transcends it.
