The cost of testing a drug for "human compatibility", e.g. the whole clinical trials series, is too high due to how many quality-adjusted life years are saved due to this. Actually, even if you just compare the money the medical system itself wastes on overtesting, instead of using it to help people with existing technology, you see that a lot of this clinical testing money is spend wrong. If we can fix this fearmongering with "bad" medicine, we can reduce the regulation for this and thus allow many more novel drugs to be developed or to spend much less on their development.