>> Moshe gave hakaras hatov to inanimate objects, yet you are incapable of thanking a Jews who put themselves into danger to protect you!?
> I am capable, but the Torah forbids it.
Maybe you can give your sources and then we can discuss them? You seem to be presuming that a random doctor is a rasha. Why would yo say that? He is not a potential magician of “medicine” of 2000 years ago – he spent years in medical school and residence and working long hours to keep you healthy.