Friends of ours are commited Christians and used the in-vitro method of conception. They made the decision and held to the belief that *all* embryos should be implanted. The first time they were able to implant one embryo (because only one was available) which resulted in a healthy birth of their little boy. The second attempt resulted in three embryos and of course all three were implanted. The triplets are now 7 months old. All four children are just beautiful!
My husband and I chose not to go that way. We're very blessed we were successful with an IUI procedure.
We also have friends who had all the embryos implanted. They now are the parents of triplet girls and they doubled their family size. They are staunchley pro-life.