Just to clarify, properly trained and handled drug and bomb sniffing dogs do actually have quite a high accuracy rate. However, in the hands of shitty police officers… sigh.

Because the waitlist is often very long. On top of a limited supply, there are other limiting factors, e.g. if you’re already really old and sick, the organ that becomes available will likely go to a candidate that’s more likely to have a successful transplant instead, such as a healthier kid or something.