Is it true woman are liars because of their insecurities?
Women just like men will lie for many reasons insecurity, to get their way, to make themselves look better. I think most people lie because they are afraid of what the consequences of the truth are. The fear of the unknown is scary for most people so they will withhold important information or twist the truth so they don't look bad. Lying at its base, is a protective instinct, a survival tool. Unfortunately some use it too often and for the wrong reasons and only end up hurting those around them.
When you are having an argument with your fella and you say "no, its fine". Is it really fine and he's won?