It's not normal. It's a sin to use drugs or to abuse substances, even food, beyond what they are intended for. I've read that 60% of the U.S. population is on some form of prescription drug. How many more use both legal and illegal substances, including alcohol, I don't know. But because it's so prevalent, everyone seems to have some disease or disorder these days that require medication, I imagine that's why it seems that so many people are defending the use of drugs.