Dr. House on the show "House" has a rule : EVERYONE LIES. Whether it's patients to doctors, wifes to husbands, children to parents, employees to bosses, etc. Sometimes to cover up a wrong doing, sometimes to avoid embarrassment, sometimes to make someone feel better. There are many intentions to lying and we all do it. Does it makes us bad people ? Ofcourse not, we're only human and prone to make mistakes. 

I'm not always right, but I'm never wrong -Garfield