Marriage is :

Mariage is an institution designed for the sole benefit of women.
Sorry, but no

Marriage was designed by Allmighty God for the sole benefit of humanity

Look at a civilization with strong marriages and you will see a healthy, prosperous civilization

Look at a society which undermines marriage and you will see quite the opposite

I dare say that a civilization can only be as strong as it marriage

In fact, the decline of marriage was one of the key factors in the downfall of the Roman empire