1...Everyone's different, so drugs will affect people differently. Maybe he is not as sensitive to drugs?
Eh.. I think I'm just as sensitive to drugs as anyone else. And I've definantly taken things to limits as far as what I've consumed and experienced as a result.
I've travelled backwards in time, been abducted by aliens, watched grassy hills turn into furry dinosaurs, watched trees turn into multi-headed dragons that fought each other, I saw the life of Jesus all the way to his ressurection in the sky, I've had telepathic experiences, I've died and become a floating bodiless consciousness drifting through the universe, I've floated through music and on and on and on.
2...You may have been using/experimenting with drugs as more of an escape, and the escape wasn't quite what you wanted. (As opposed to using them more recreationally)
Well, first of all, I don't believe anyone goes beyond the stage of experimenting without there being some element of escape involved. There's obviously a part of anyone that is unfulfilled with real life that they have a desire to alter their consciousness.
And certainly over the last year my use of painkillers and heroin has largely been about escape. I've used as a means to deal with my depression.
But before that, I always looked at myself as being my own guinea pig. I was fascinated with the subconscious mind and exploring how the brain works. I went out of my way to try every single drug I possibly could just to find out what they did. I was convinced that certain psychedelic states were important in understanding humanity. And I believed that the drugs actually made certain things happen.
But I came to the realization that it's all inconsequential. The drugs themselves did not magically put the visions and thoughts into my head. All my experiences came from both my conscious and subconscious mind. There is not a single thought or vision I couldn't have imagined on my own.
And you know what? Despite everything I experienced, it didn't change a goddamned thing. I still have to wake up and go to work and pay taxes just like everyone else. None of it made me a better person. The most unbelievable and outragous thing could have happened to me the night before that totally changed my outlook on life.. and yet I'd still have to go to work the next day and come back home and find that my dishes weren't clean and I still had to fold my laundry. There were still bills to pay. All I ever had to show for anything was some crazy story that not many people cared about anyways.
Not to mention that in the process I damaged my brian psychologically and perhaps physically several thousand times.