Can long-term hard drug usage improve your life?

[pete fabrizio]

So obviously Heroin is probably ALWAYS -e.v., but I'm pretty sure that people who use marijuana responsibly and in moderation can improve their overall quality of life. But what about harder drugs? Is it possible to responsibly use cocaine or LSD or some other hard drugs over an extended period in a way that enhances your life, without excessive risk of turning into a junkie?