Drugs aren't inherently bad, but the way that they try to fix problems in the body is what makes them a gamble, they alter chemical conditions in the body to either promote or hinder the production of hormones in the body, which causes collateral changes. [Which is why so many drugs have side effects, and why overdosing is so dangerous, because the side effects become amplified.]
Quite simply, when ever you can, keep the concoctions in the crucible, and change an illness with something more natural; such as behavior or diet.
It's not religious bullshit, and if that kind of thinking is perpetrated we will become a society that becomes dependent on highly destructive substances; depressions, diseases, and other ailments are often times attributed to poor diet and behavior; it is idiotic to accept the perpetuation of such behaviours if there are drugs that can reverse the effects. [Essentially, 'treating' but not 'curing' or 'preventing']