There are many people with a medical degree practicing it. UK's NHS supports it. Holy water is much cheaper than the drug industry's offerings. It's a placebo or alternative treatment for a lot of light ailments. Just like folk remedies, most of the time it "works" and you come out alive and well so it's not hard to believe.
Of course it's offensive to science on ideological grounds.
And if someone were to recommend it for a definite diagnosis of cancer that would be irresponsible.
As for Steve Jobs, rationality was not his key to success.
Hearing that Steve Jobs lost his life due to his insistence to treat his cancer with homeopathy is what convinced me that homeopathy is probably going to be with humanity forever. If someone as shrewd, rational, and rich as Jobs can fall victim to seductive thinking, then it must be true that education isn't enough. In order for education to be effective, it requires someone willing to learn. Was Jobs such a person? If so, then how is it that he still fell victim to homeopathy?
It seems being a homeopathist is a part of one's identity, the way being a vegetarian or a democrat or a hacker or a christian is. I don't understand why it's so difficult to change, but it's certainly an example of the destructive power of choosing the wrong identity.