The top Vatican bioethicist has spoken out against the new stem cell method that seems to be able to produce embryonic stem cells without killing embryos. [hat tip: Mark Olson] One might expect pro-lifers might be cautious in case the facts are not as they have been presented. Still, this sort of criticism is a little surprising. Is this really the standard Catholic view? It seems to me to be based on very strange reasoning.
As far as the article reports, this is the reasoning. This method relies on in vitro fertilization, which the Roman Catholic Church opposes in general. I understand the argument that in vitro fertilization if immoral as it's often practiced, with far more embryos created than are implanted to be developed. A consistent pro-life view will oppose that practice. But opposing in vitro fertilization in principle? That just seems irrational. The explanation seems to be that in vitro fertilization necessarily replaces conjugal relations in a way that artificial insemination may or may not do so. So artificial insemination can be ok or wrong, depending on whether it replaces conjugal relations. But in vitro fertilization always replaces conjugal relations.
This argument makes absolutely no sense. How many people who engage in in vitro fertilization or artificial insemination do so to avoid having sex? The only people I can think of are single moms who have someone donate sperm without engaging in sex, but I would hope the Catholic church doesn't oppose unmarried people not having sex. The ordinary married couple who uses in vitro methods to conceive is not doing so to avoid sex. They're doing so because sex is insufficient to cause conception in their case, and they're hoping in vitro methods will succeed. That doesn't mean they've abstaining from sexual relations. People do abstain from sexual relations for reasons other than prayer if they're using natural family planning to avoid conception, and that does go against biblical teaching, but that isn't what goes on in the ordinary case of in vitro fertilization. This objection just doesn't make any sense.