Any solution to this common poblem?

Our family system actually sucks. Why do you hear about so many saas-bahu-nand-devrani-jheetani fights? look around you, you’ll see it for yourself. This is a sign that this joint family system DOESN’T work. Why should anyone have to built a strong relationship with inlaws as you just mentioned? Am I marrying my inlaws? The only person i need to build a strong relationship is with my husband, not his family. And sense of competition is natural when you have so many people living in the same house. If everyone is living seperatly in their own homes, there will be no cold war.