A lot of alternative medicine sounds reasonable enough.
It is easy to see why so many people believe in traditional herbal remedies, for instance. Because they have been used for hundreds or thousands of years, people assume the traditions must be rooted in some sort of truth. Besides, scientists have isolated a lot of therapeutically useful compounds from nature, like caffeine and quinine, so it's not far-fetched to believe that all herbs have some sort of medicinal use (even if most don't).
Homeopathy, on the other hand, is just plain nuts. It completely defies logic how anyone with a halfway functional brain could buy into this. This type of alternative medicine is predicated upon three completely insane ideas.
Homeopathy's Three Insane Principles...