There is valid reason to keep homeopathic treatments - sometimes psycho parent/patient comes to a doctor and demands a treatment. While doctor knows that there is none needed, such parent might be persistent and could otherwise give a child/himself something dangerous. In this case prescribing homeopathic placebo is a great way to calm down such person and stop him from self-medication. Sadly, it has a side effect of people starting to think that it actually works.