I think what I meant by ,my reference to drugs, is that you can`t discount them altogether, nor say they are the only way.
People get inspiration from different places, and have their muses in different areas.
I won`t entirely close my mind to any method, regardless of wether I agree with it or not, and I`ll certainly try anything I haven`t tried before as if you close doors then possible paths of learning are also closed.
I`ve purposfully put myself into various extreme emotional states to see what creative energies can be got from these places, as well as various states of inebriation, meditation and such.
Admittedly my artistic output isn`t restricted to music alone, I paint and write also, so I`m into exploring the mind and spirit for explorative and creative expression anyway.

But I think to totally discount any particular method is to essentially be a little closed minded Scot.
Art is a process of the soul and mind, and everyone has their methods and varying output, which is what makes it all so beautiful, and although we may not understand the methods or output of another artist or artists it doesn`t mean we can`t appreciate what they do and how they do it.