If you can problem solve as partners, rather than setting up some sense of blame or competition, you're way ahead of the game. But that's not easy. Some of these things only come after years of acquired wisdom. But the fact is that it's true. Marriage is hard work.
Marriage involves compromise.
It involves understanding. It involves sacrifice. It involves tolerance. Romance makes it all worthwhile. But if you only look at the romantic side of marriage, that's just unrealistic.