Well, first of all, I did my best structuring the post for better readability.
The problems of the question remain:
It is bloated. While giving context is generally a good thing, in this case, there is a whole lot of information that is not really necessary for understanding and answering the question (esp. the part about different locally used substances)
It is not about philosophy in particular. While this is a site on philosophy, it is not a place to discuss related issues. The idea of StackExchange is to establish a database of questions on philosophical knowledge, not to produce original philosophy.
- It is not exactly clear what your question actually is. Mind, you should try to formulate one single concise question. This is actually very hard. Every student of philosophy can tell you this is the hardest part of academic work. If you have multiple questions, split them into multiple posts. This way they can later be found by people having the same question(s).
To offer help: I would suggest asking about philosophers (reference-request being the tag to go) who wrote about the ethics of entheogens. For most topics, you will find authors discussing pros and cons in applied ethics. A quick search on scholar.google.com for "ethics entheogens" had an output of 733 hits. Also, try to omit everything that is not necessary for understanding and answering the question. Omitting unnecessary noise makes it easier to read and more likely to be answered.
By editing it to be a reference-request rather than asking for opinions you can get answers and further reading and make it a good fit for SE (look here for what to avoid).