I am again don't think western society is full of kids unattended to and who are not taken care of. What I have seen the biggest 2 reasons of are--
1) poverty
2) bad upbringing/unhappy family atmosphere
Also, how can society decide for an individual--what fights are "significant", and which are not. Society doesn't have to deal day in and day out with the couple. Its the man and woman have to deal with each other. Each person is different and his expectations are different. If people are not happy while living with each other----how will they raise happy children and happy families?
How can we as a society impose happiness on anyone?...We can impose marriages on each other? but we can't impse them to be happy with each other?
Also whats wrong about the people in the west...who have married 3/4 times--or have not married at all, yet had partners?...How come we have concluded for them--that like animals, these people have contributed nothing positive to society??...And what makes us think, these people are unable to take care of their old age?...or their children will not be smart, happy and successful people...the President of United States-Barck Obama, did not have any connection with his father..and his mother divorced twice...but since Obama was raised well, in a happy atmosphere---he was capable of going to Harvard, successfully marrying...and generating a happy family.
I personally don't feel that single parents can't bring up their children well...if they have the financial resources to, and are emotionally healthy. I think its more important for the society to ensure that people are happy--married or not.