Not all lies are hurtful. In fact, sometimes lying is the best approach for protecting our privacy and that of others, some researchers say. Some deception, such as boasting and lies in the name of tact and politeness, reclassified are considered as less serious. Bald-faced lies (whether they involve leaving out the truth or putting in something false), are harmful, as they corrode trust and intimacy—the glue of society.
We all lie, all the time. It causes problems, to say the least. So why do we do it?
It boils down to the shifting sands of the self and trying to look good to others and ourselves. According to the experts "It's tied in with self-esteem," "We find that as soon as people feel that their self-esteem is threatened, they immediately begin to lie at higher levels."
"We're trying not so much to impress other people but to maintain a view of ourselves that is consistent with the way they would like ourselves to be, we want to be agreeable, to make the social situation smoother or easier, and to avoid insulting others through disagreement or discord.