Go fuck yourselves. If you are not looking for deeper meaning insides these drugs which give deeper understanding of things, what the fuck are you doing these drugs for?
There is only one thing I can say for acid and the environment, simply do not do it around other people who are not tripping, or those who have taken different trips then you.
Look into your drugs how ever you want to, if you want a spiritual experience, link your feelings with the spiritual while you are tripping, there is literally nothing wrong with it. It get's annoying when you start expressing it towards other people.
That being said, if you can - fuck off all psychedelics EXCEPT DMT. I have done them all, several different types of mushrooms, literally ate 100grams of blue meanies for my first trip - 300grams of fresh picked blue meanies from a paddock near my house between 3 of us. I have one acid countless times. The only drugs I have tried on the psycaldeic end are the high end ones, Ibogane, Auyhasuca etc, etc, but they are just DMT offshoots.
YOU HAVE TO GET YOUR HANDS ON DMT. Literally, everything to do with drugs you see in movies, weather i be acid, mushroom, peyote or marijuana, they are all expressing DMT.
DMT is the king, DMT is the lord. DMT is like no other psycadelic out there and is the most literal form of a trip out there, I felt like and it looked like I was travelling through a fucking wormhole, spiritually. I would look up and open my eyes all I would see is everything moving upwards really quickly like the jackpot on a slot machine, or like the ground was the floor of an open elevator rising very quickly. I would close my eyes and see the generic artwork you see when you see "hippie artwork", but unfortunately I did not smoke enough DMT, I literally felt myself fat out of the trip and come back down, while my mate who had had enough tripped and said he saw the 'lady of light' a common theme among DMT experiences. He said he didn't see anything, but he knew he was very very small and the lady of light encircled him like the size of a planet and beckoned him to come with her.
That shit is as spiritual as you want to make it. Acid/mushroom and the like s about geometry and trip visuals, DMT is a truly tripped out spirit.
tl;dr - Take DMT.