I want to say that there is really nothing to worry about. Stem cells are just like any individual cell in your body with the difference that they can form any cell you like. And individual cells don't have the ability to feel any pain, so there's really no suffering involved. And an 8 cell embryo is very very far from a baby. It's almost ridiculous to call it a baby. To speak of murder does therefore not make sense at all. Your body loses millions of dead cells every day. And with the right methods you could in principle turn those cells into embryos too and you don't speak of murder in that case either. Trust me, I'm a biologist. And I was also raised christian btw. So let those people do their amazing work so we can rid the world of these horrible diseases. Only good can come from it!