I personally don't care if they ever take drugs or not, it's part of their personal lives, period. But they DID take drugs, there are pictures to prove it and some of their lyrics and their music prove it.
I would also agree to.. maybe, they did not take drugs while onstage. That's highly probably. But again we have a picture of Roger smoking pot at Earl's Court 1973 if I'm correct.
So anyway, I'm pretty sure they had their experience.
Seamos estupendos amigos
Dejemos la critica de lado
la musica no tiene mensaje
la musica no tiene moral
la musica no tiene mensaje para dar
y sin embargo te lo da