This is really a broad topic. If there are genuine reasons for divorce, it is an acceptable option. No one is supposed to be forced to live in a state where he/she is perpetually abused.
But then what we see in the society is many couple these days are not making genuine efforts to save the marriage and they also find they have no idea how they could save the marriage also. Marriage works only as both persons understand the true purpose of why to get married. Marriage is an institution where a person enters to get an opportunity to enhance his/her capability to be more loving. Instead, if a person believes he/she will be able to receive love in the marriage, he/she could be disappointed. The opportunity for everyone in the marriage is to increase his/her capability to be more caring, compassionate, gentle, tender, understanding and loving and also how much he/she could be with his/her partner, available to his/her partner and present to his/her partner. And the effort to save the marriage has to be there unless one of the partners is abused consistently or could possibly be in a genuine danger.
At the same time, both the partners are not to pretend they are feeling no pain in the marriage also. They have to find the appropriate help to get to know why they are feeling pain. That could be in the form of professional help also. An unfortunate fact of the World is 80% of the marriage counselors also have no idea on how to help the couple who are finding difficulty in improving the quality of their marriage which itself is one reason divorces are getting more common.
In fact, I am also studying the serious issues on why there are more divorces these days. But there are many complications, one has to look into. Joint families are no more there these days. When the husband and wife are left alone, are they able to find ways by which they could get to be more comfortable with each other? How is life if the husband and wife are put up the husband's parents' home? What is the role of all the concerned persons in this situation to save the marriage? These are big questions to be answered and the topic thus becomes broad.