Why are movies so important to society?
Samsonite Delilah says

Escapism
Entertainment
Dissemination of information, education
To see others who are having the same problems we are
To see how others handle problems
To see justice served, for a change
To see others who are having bigger problems than we are
To feel connected to humanity
To feel connected to aliens, robots, talking lion cubs, etc
To see the art of it
To see the reality of it
To explore "what if"