There’s always an alien battle cruiser, or a Corellian death ray, or an intergalactic plague intended to wipe out life on this miserable little planet. The only way these people can get on with their happy lives is that they DO NOT KNOW ABOUT IT!
Agent K?
Let's see... I know it's the wrong canon, but if I remember correctly, it goes:
Drink beer.
Buy sandwich.
Beer.
Drink beer.
Exit when house crashes.
Give sandwich to dog.
North.
Wait until Ford drops device
Get Device.
Press green button.
And then I'll wake up on a Vogon Ship after Earth is destroyed.
Problem solved.