There are many thousands of studies which have appeared over the past four to five decades showing quite clearly how absolutely important biological mothers and fathers are to the well-being of their children. Study after study has shown that no other factor is more vital to the healthy development of children than having a mum and a dad.It is a full-time job just keeping up with all this social science research. Let me mention one of the most recent studies, this one from the United Kingdom.A m…