I have name changed for this as it is very sensitive to me and my family and I’ll try to keep it as broef as possible.
My sister is gay and her and her wife (they have a civil partnership) have wanted to have a child for some time. I have a younger brother who is 19 and one months ago Dsis and DSil asked him whether he would donate sperm for artificial insemination. DSis has implicitly stated that this is what was going to happen was going to happen for the last few years without ever telling him and no-one in the family has ever challenged her (I accept that this is partly my fault). My brother initially told them that he would need to have a long think about it but last week told them that he did not to do it. Since then my sister and the family and some of our family friends have reacted very nastily towards him, my mum and dad uninvited him from Christmas dinner and my sister sent him some very nasty texts along with telling everyone that he is dead to her and that she has no brother etc.
I feel that it is his choice though and the reason he gives for not doing it (he would feel uncomfortable around a child he had biologically fathered but was not their parent) is a reasonable one regardless of whether you accept it or not. I saw him yesterday and he is shell shocked by the whole thing and the way that most people he has known since he was very young have turned on him. I feel terrible for him as he has suffered vitriol from most member of our family in the last week or so for making a legitimate choice. DH seems to think that the initial reaction is expected and although it is unpleasant at the moment, it was an inevitable consequence of this decision in an emotionally charged environment but that it will inevitably blow over. I feel horrendous about the whole thing for him as so many people have turned on him for making a choice that is acceptable in my opinion alongside the ridiculous assumption on the part of my sister that he was certain to agree to this request.