If Taking Substances Makes People Feel Good or Better, What’s the Problem?
When they first use a substance, people may perceive what seem to be positive effects. They also may believe they can control their use. But substances can quickly take over a person’s life. Over time, if drug use continues, other pleasurable activities become less pleasurable, and the person has to take the substance just to feel “normal.”
https://www.drugabuse.gov/publications/drugs-brains-behavior-science-addiction/drug-misuse-addiction#:~:text=If%20taking%20drugs%20makes%20people%20feel%20good%20or%20better%2C%20what%27s%20the%20problem%3F