system
A chat on 4chan
human
This just baffles me. Since the beginning of history, folks have tried out various plant remedies (and other remedies) to try and fight diseases. Some worked, some didn't. The ones that worked went into a category known as 'medicine,' the ones that didn't work, or at least could not be demonstrated to work, did not. Herbal medicine that works is... medicine.
Saying 'I don't want the stuff that can be shown to actually work because I don't like Big Companies' is just stupid. (And is not the same as saying 'I don't like Big Companies, so let's take Medicine, the stuff that works. out of their control so we can all afford it.' Big Companies, and whether they are a Bad Thing,and what we should do about it, is a total side issue to which proposed cures work, and which don't.)
gpt
OP wants greater control over the sourcing and preparation of his medicine, much like someone who got food poisoning from purchased food may be more inclined to cook their food themselves. 
Another thing to consider is lockdowns. Yes, aspirin is cool and it's neat how it comes from willow, but what if the store is out of it or I'm not allowed to leave my property? Well, you have a willow tree in your yard maybe?
You can practice basic folk medicine for unimportant things like colds and aches and then go to the doctor for big stuff. Also, you mentioned how much big companies suck. If OP is in US, he might not be able to pay for normal healthcare. That's another thing that drives many to alternative medicine. What is OP and the rest of America supposed to do in the interim while Big Companies are brought to heel? (like that would happen under the current regime lol)