If you are here to find answer then sorry to say there is no one accurate answer to it but We can discuss various reasons behind that and lets see which one makes more sense to you 

Indian Society is well known for its culture though many times you will face irrational customs and hypocrisy in ideology of Indians. Though This society used to take proud in their forever lasting marriages. ‘ladki ki doli me bethke sasural ati he aur fir uski arthi hi sasuaal se jati he’ kind of moral teaching is given to daughters. marriages are meant to be with each other forever. '

since last three four years we see so many , marriages breaking , couples taking break,separations what could be the reason behind that?

One of the very common reason this patriarch society gives is women empowerment. Many thinks independent women do not give enough efforts to save marriage. Marriage demands adjustment and sacrifices do you think now women who are not dependent on husbands do less sacrifice and man are any which ways not grown up doing sacrifice for women. If this is true that means success of marriage is depends y on how sacrifice women can do ? and not on love , understanding & compatibility.

when a girl choose guy , she and her family makes sure guy is earning well and he has property or not? but finance also do not guarantee that it will not let break marriages 

Then next parameter is high moral values. Do new generation is grown up with less moral values? Do we as society failed to teach our children how to maintain relations, not breaking commitments or infidelity is crime. Do we failed to build strong resilient characters?

how many of you feel people have became lazy in giving efforts, new fast and depressing life do not motivate a person to do extra for saving relationship. every one demands comfort for self even in partner , no one ready to accept little bit hardship 

I believe social media and other techno stuff is big distraction. That have ruined human touch in life, people are busy in virtual show off so real life fun goes away

less tolerance, impatience and less faith in partner is new age issues. societal pressure is decreasing as divorces are common so every one considering it for even little misunderstanding happens. Pleasure quotient have taken higher priority then morals, commitments and endurance.

This are some my thoughts for not lasting marriages . what is yours? which reason you think breaking marriages?  share with me.