Earlier quoted context omitted.
You do you of course. You can grow your own mushrooms at home fairly easily and then you have more control over quality/contamination etc.
Ok, so you have some control over quality. I'll also be generous and assume you have good estimate of dosages and/or some way to maintain consistency of dosages (anyone else reading this, the standard advice is to take less than you think you want and wait 45 min or so, then take more if needed to reach planned cruising altitude. This works if you have enough prior experience to calibrate by, otherwise is very diffic…
The genera consensus seems to be that mushrooms (psilocybin) can’t kill you. You can’t OD on them. There is no known LD50 (that’s “practical” to achieve anyway), they dont cause addiction, and if you take them too often they actually stop having an effect until you take a break and use again.
There are risks if you have other mental health conditions like schizophrenia etc, but (according to my research), the only risk if you’re otherwise healthy is to have a “bad trip” where you’re basically experiencing negative feelings. By reading about the experience, you also learn that if you resist the bad trip it gets worse but if you look at it with curiosity (what is my brain trying to tell me?) then you’ll have an easier time.
About assessing te severity of your depression, there is a standard test (of which I forget the name) that is also used in the studies submitted to the FDA for approval of antidepressants that ask questions, you then add the points up, and anything above a certain number is severe depression. Although this is yet another flaw of the studies, the people running the studies don’t even agree on the score that give you mild vs severe depression.
Again, I have no medical training so this is just a random stranger’s opinion on the internet. To anyone reading: educate yourself about the whole thing, see if you’re willing to try, and make your own decisions.