Why Do People Use Substances?

Using a substance can feel really good for a short time. That’s why people keep taking them—to have those good feelings again and again. But even though someone can take more and more of a substance, the good feelings don’t last. Soon the person is taking the substance just to keep from feeling bad.

https://www.drugabuse.gov/publications/drugs-brains-behavior-science-addiction/drug-misuse-addiction#:~:text=Why%20do%20people%20take%20drugs%3F