In my opinion it's the other way around,I've experimented on weed for short period of time in that time I have learned some life lessons like the things that should matter,and plus my mind was free to think anything,I've been always taught that questioning is a sin and will get you to"hell".I was living under fear ,I felt that on my first high. and I wanted to know more about us humans societies,moral,the cosmos. So you see your freedom joint will lead you philosophy but this is only in my case might not be true for everyone