Designer babys

we talked about how would you feel if your sibling was born just to save your life. like if your little brother or sister was born just because you needed something from them so you could live. in some ways i dont think its right. if i was born to save my older sister life i would not feel the same, like i was just born because of that  and it was for a reason that they wanted me ,they needed me. dont get me wrong i would want to save someones life but just the feeling that it was not for love. they basically found me created me just to help their child. but in a way it was for a good cause so i cant get mad. do i think this is right? yes and no. its a really hard topic to discuss and have answers. but its something to look into.