Considering the antithesis between divorce and marriage, in order to learn of the reason why Allah hates divorce so much, we must first see why marriage bears so much significance in His eyes.
In the Quran, the creation of people in pairs has been mentioned as one of Allah’s signs, which is a means of their peace and calm. In the narrations of the infallibles also, marriage bears great significance, to the extent that the prophet of Islam (pbuh) says: “No institution has been established in Islam more beloved to Allah than marriage.”
In addition, one of the benefits of marriage is procreation and the continuation of the human race. Thus, since divorce is the termination of marriage and it is by divorce’s means that the family is torn apart, and in some cases, the children, who once felt the warm hand of the mother and father stroking their heads, are left without someone to take care of them that they can go to and are left to themselves, and it is usually these same children who end up being criminals and felons in society. These and other reasons, such as divorce contradicting the philosophy of creation are why Allah despises divorce so much.
Of course, please do note that divorce is despised when it is done without an acceptable excuse, but if there is a good excuse for divorce, it will no longer be hated, and that is what divorce is for; for when there is no other way out.
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 See: Falsafeye Ezdevaj dar Islam, 1300; Falsafeye Khotbeye Aqd, 1445.
 Saduq, Man la Yahduruhu al-Faqih, vol. 3, pg. 383, Jame’eye Modarresin Publications, Qum, 1413 AH.
 Hurr Ameli, Wasa’il al-Shi’ah, vol. 22, pg. 283, Aal al-Bayt Institute Press, Qum, 1409 AH. It has been narrated from Thawban that the prophet of Allah (pbuh) said: “Any woman who asks for her husband for divorce without any reason, the scent of heaven will be haram on her.”