I am not on a network but my IT person at work set up my MacBook Pro for me to take home. 

Nearly every time I try to make a move between apps or open up anything new I am asked to give a password for the Keychain. I have spoken to others in my group who use Macs at home and they think I am nuts. 

What is the purpose of that? How can I disable Keychain asking me all the time?