If people want to get married to have kids - great
If people want to get married and decide to not have kids - great
If people don't want to get married but want to have kids - great
If people don't want to get married and decide to not have kids - great
If people of the same sex want to get married and decide to not have kids - great
If people of the same sex want to get married and have kids - great
Some people get married and don't live with each other - great

So, now what was the point you were trying to make?

I don't go to mythical places with strange men.
-- Douglas Adams, The Long Dark Tea-Time of the Soul.