Proverbs 21:9 It is better to dwell in a corner of the housetop, than with a brawling woman in a wide house.
Our homes need to be a place of refuge and rest from the problems of this world. If the place is a battle ground it does not matter how small or big the house is it will be in constant turmoil. It does not matter how small the the house is if there is love in the home, but you cannot get a house big enough if there is constant fighting. The house tops in the days this was written were open spaces on patios, with a small arbor or enclose in the corner, which was a very inconvenient place to live. This verse kind of shows us why the Bible tells us not to be unequally yoked. It is setting the stage for a bad relationship if a Christian and a non Christian are married but if this happens it does not mean the lost one cannot come to Jesus. It will just take a lot of praying an forgiving to keep the house at peace til this happens.