why do married couple have to seperate or divorce?

Philippines
September 15, 2011 2:19am CST
After being together for many years, why do some married couple decide to separate or divorce? What are the common reasons of divorce/ seperated? Is it about financial thing? Married couple should hold on together until their last breath. I feel so pity for those children who are affected with broken family. Divorce is not legal in my country but most married couple just separated without any legal way. Separation is a bit high and i think it would rise in the future because many young adults married early and they are not both ready for parenthood. How i wish all marriages go well.