Do you think marriage is obsolete in today's day and age? Is it something we can live without? Or do you think it has valid reasons to exist?

If the answer to my last question is yes, why do you think are some of the strengths of marriage as a concept and not so much as an institution. If the answer is no why do you think marriage is irrelevant?
Do you think marriage is obsolete in today's day and age? Is it something we can live without? Or do you think it has valid reasons to exist?
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