It's wrong to harm your body with excessive drug use.
Luke is a recovering drug addict who just got out of rehab, and his friends invite him out to a party to celebrate but there's going to be drugs there.
Luke wants to have a good time.
Luke decides to avoid the party entirely and watch a movie at home instead.
Luke dives back into substance abuse without hesitation at the party, doing line after line through a rolled up twenty dollar bill.
Luke continues to stay on the path to recovery, and lives a much healthier lifestyle as a result.
Luke eventually overdoses and dies from his constant substance abuse.