Why do people divorce/breakup and what do they get/lose from it?

People in relationship/marriage will be together for a long period. They spent a lot on their partners. For example a guy/girl buy a car for his/her partner and when they breakup its the partner's car. There are many things like that house, bank account and etc. So what they get? And most importantly why they divorce/breakup?
Why do people divorce/breakup and what do they get/lose from it?
2
4
Add Opinion