Will the institution of marriage disappear in a couple of generations?

7121uc
My neighborhood was having a block party over the weekend. In the party, all the neighbors met and interacted with each other. It was during this even that I realized how irrelevant marriage is now days. In my neighborhood, there are twelve houses and of those twelve houses only five homes are headed by two adults that are married. The remaining seven include five households in where there is a single woman as the head of the house and two households with single men as the head of the house. So, it seems that even in a middle class neighborhood like mine marriage is becoming irrelevant. Do you think that marriage will disappear in a couple generations?
Will the institution of marriage disappear in a couple of generations?
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