It can be used to toast to someone's good fortune or hope for a better future.
It can be used in an expression of undying love or simply to enjoy a relaxing moment at the end of a difficult work week.
But alcohol can be an evil thing, also.
Alcohol can cause brain damage, heart problems, and strokes.
Alcohol can lead to liver damage.
Alcohol can lead to drunken driving accidents and even death.
Why alcohol is such a problem for some people and not for others still.