I would postulate that any arrangement where the parents, regardless of number, can be happy and productive is an arrangement that results in a happy and produc

I would postulate that any arrangement where the parents, regardless of number, can be happy and productive is an arrangement that results in a happy and productive child. Instead of studying the various methods and deciding which one is best as though it would make a single difference to the people at large (as if there are people planning their lives by the statistical "best life", whom we should probably ship to Area 51 since they are clearly not human) how about we just agree to all mind our own damn business and let people live how they want to live, with a spouse of the sex and color they prefer, or none at all, with 6 children or with none, and just get on with our lives?