People fall into the temptation of others and follow what they do even if they don't want to do it. I know peer-pressure is a very big thing in middle and high school and I'm pretty sure it can happen to adults. This talks about how it can be like a game to some people because they can get so absorbed in drinking, smoking, and taking drugs that they think it's fun. A lot of people don't think about what will happen in the end. They focus so much on living like today is the last day of their lives, and it could be.
But why do things that harm your body when you could be things that are better for you? I may be pretty young but I do understand that hurting your body will only give you pleasure for the moment for when your older you regret what you have done when you were younger.