Why would nicotine gum be helpful for a smoker trying to quit, since it contains the harmful drug?

Nicotine gum can be helpful for a smoker trying to quit because it provides a way to satisfy the craving for nicotine without the harmful effects of smoking. The nicotine in the gum is absorbed through the lining of the mouth, providing a slower and more controlled release of nicotine than smoking. This can help reduce the severity of withdrawal symptoms and cravings, making it easier for the smoker to quit.