We ignore those things as well because we are told from a very early age that troubles should not exist so early in a relationship. The "honeymoon" should sustain our collective souls for many years before we should ever have issues to work on and by then, kids should be in the works, so we should just keep shoveling that away.
I was having the discussion with a coworker today. He is going through a divorce and we were talking about the children. He was concerned about them and how this was going to impact them. Well, I assured him that they would survive it, they might not be happy about it, but they would survive. I then spoke to him about the lesson that they will hopefully learn. Not that marriage is disposable, but that misery is not a permanent state of existence. We can rescue ourselves from it. It doesn't not weaken us, it makes us stronger if we allow ourselves to leave misery behind.
RE: Why We Never Get This Marriage Thing Right