Well if you see society as a supreme authority you will definately want to have a stamp of marriage however if you dont regard society as as some supreme authority there is no need for a stamp of approval. Society is just a groups of people made of people just like you and I. For me, I'll make my marriage as a 'briefing session' rather than a 'stamp of approval'. And in a 'briefing session' you first make a decision and let other people know about it even if they like it or hate it and there is no need for consultation or a stamp of approval.