By that time the kid would BE mine. There's no way I'd part with her or him willingly. There would be so many ties, so much interaction and love already.

I think that in my case (a woman) that it could only be a mix up at the hospital. I would initially be shocked, but I believe I could overcome that shock relatively easy and just carry on. Biology does not make a parent a good one after all. Although I think I would take every endevour to make sure my biological son/daughter was living a good life also, not to mention probably sueing the hospital

Well, I'd either be angry at the hospital staff for misplacing my child, or angry at whomever I had been with when the child was concieved for cheating on me. But in either case, I wouldn't hold it againts the child, I raised them, I was Mum/Dad to them, so even if they aren't my own flesh and blood, I would still consider them my own child in everything but genetics. Just as I would not consider their biological parent to be their parent in anything but genetics.

I would have mix feelings I would want to know my biological child up I don't think I could give up the child I raised for 5 years. I would want them both. I would be very heart broke and maybe even a little lost with out the child I taught to walk talk and love.

If I found out that the hospital had made a mistake, I would mainly be angry and concerned that the child's real parents might come along and try to take him/her away from me. By that stage, it wouldn't matter if the child didn't have my DNA, I would have cared for and loved him for five years - so finding out that he wasn't mine wouldn't change the way I felt about him - he would still be my child. However, knowing that my own biological child was out there would make me want to find them and see them. It would be a difficult situation all round. If I was sensible, I think I wouldn't have any contact with my biological child after I found out they were alright - I'd probably have contact with the 'parents' but not with the child him/herself. I would be open with the child I had raised about the switch, but I wouldn't want that relationship compromised by my relationship with my biological child. I would probably wait to have contact with my biological child until they were older, or until they came looking for me (as a biological child that has been adopted out searches for their birth parents). Because I'm a woman, I can't really answer the infidelity part of the question. I certainly think that discovering that my child was brought about by an affair would hurt a lot more than a hospital switch - because a child as a result of infidelity is a child that is the result of betrayal. I think I could still love the child, but I would be very angry, and while I'd hate for that anger to spill over toward the child, but I don't know whether I could control that resentment or not.

I'd love the child that I took home and love the child that was taken from me. Equally. Hope i could get mine back, and bring them both up. I understand about the other biological parents, so maybe we could make visiting arrangements so that my wife and I could continue our relation with the child we have learnd to call our own.

I'd feel betrayed, but i would still love the child. DNA isnt the most important part of a child/parent bond.