I find it rather funny how overly serious and intense many of you have been about this subject. I simply shared my experience the one time i did decide that it was a need... please keep in mind i dont work at petsmart, petco, etc and I have worked with a few hundred snakes for a few years. This is not me just talking about a subject that i heard about or read somewhere. Real hands on experience.

If you are so inclined to believe that there is no way to condition them on this subject, then that would mean in NO WAY do they ever get use to being handled and human interaction of any kind.

Now as far as people who keep 50+ snakes of course you wouldnt worry about feeding in another enclosure. at that point you are a breeder or at the very least an extreme hobbyist where temperament of the animal is completely irrelevant. Thus makes no need to ever worry or care about their behavior.

Anyway.... again it is not a need in the vast majority of cases, nor will it always work. Have i used this method, yes and it worked well for ME. Perhaps my particular experience was a fluke, or so other reason changed the snakes behavior, regardless it was a positive experience for me.