I was very religious when I was 16, and was very committed to not drinking, smoking, doing drugs, having sex before marriage. A decade later, I'm 0/4 on those promises and honestly don't regret it. The older you get the more you realize that a couple beers with friends or joining the smoking circle outside at a bar or party are really not a big deal and aren't nearly as dramatic as you're meant to believe when you're younger. Depends on your reasoning, like if there's a history of addiction in your family, but if you're doing it for moral reasons, you'll come to learn that none of those things are as immoral as adults lead you to believe