An example of why people may choose not to drink is:

Family history

Supporting the legal drinking age

Don't need alcohol to have fun

All of the above

All of the above.

Explanation:

Alcoholism runs in alnost all families, rendering it better not to indulge in something that could ruin your life.

Regarding the legal drinking age, it is important to follow the law.

Don't need to drink to have fun is a true statement. You do NOT have to drink to have fun. There are plenty other substances out there that you can indulge in.