Marriages are made in heaven then why divorces

Marriages are made in heaven..is referred quite frequently, when such relationships develop and culminate in marriages.
It is seen that the theme was relevant in the early days when the girl after marriage was considering herself as house-wife with responsibilities of house hold, bringing-up children, looking after the family etc., but with the changing times, it has lost much of its relevance and a sense of equality has started prevailing and the relationship binding through thin bondage and quite easy to break. To maintain that relationship and ensure that the sense of marriage lasts, it would become necessary for both to act in a way  that there is no occasion for disbelief and management of the family on a total partnership basis.
This has to be maintained till such time the children grow up  and once this happens the bondage would be through the medium of the children which would add strength to the relationship and with age, and maturity levels also going up side by side, a sense of understanding automatically prevails and ideas of separation, divorce etc., would disappear altogether, and the real marriage with added strength would get established, and both feel that God should be thanked for such a nice relationship.