Yes, even first aid classes are interesting; I did a full four-year study course. I like the underpinning rationale of how it all works, whether you say the potions work on the "chi" or the "vital force". And some of the stuff about "constitutions" and inherited predispositions to things very much seems to anticipate genetic research.

Regarding the comparison with vaccines, the trouble there is that you don't need to believe how they work - you can quite readily demonstrate that antibodies are developed in response to the shape of the proteins on a disease organism. It doesn't matter too much if the organism is alive or dead for the antibodies to go on detection mode. (Also, treating a disease with the same substance is "isopathy" and the mechanism isn't so much about stimulating the vital force, it's a mechanical action of the body against the organism).

With homeopathy, any remedy above a 30C does not have a single molecule of the original substance left in it. When people say it's "sugar tablets", they're quite right, at least as far as we understand science now. We can't show why the body responds in the way it does. Even the existence of chi/vital force is fairydust, as far as conventional science is concerned.