Lies are essential to humanity. The fact is that there are many who are psychologically incapable of handling the truth, or sometimes a white lie is a favourable reality that helps one get through hardships.

The placebo effect is the most well known advocator of the lie. Our reality is comprised of many layers that we are ignorant about, and belief as an agent of influence has been proven countless times. Our thoughts can shape reality; our conviction and belief leave lasting impressions.

The core rebuttal against lies is the idea that honesty leads to favourable circumstances. Afterall, covering up the truth with a lie may make the situation even worse once the lie is uncovered. But humans are fickle creatures whose existence draws heavily upon the plane of sentimentality – revealing the truth in the heat of the moment might possibly be worse than the uncovering of a lie later on. The crux of this problem is that alternative realities are impossible to confirm. Events unfold through the domino effect, therefore, believing things would have turned out better if things were different is hypothesis contrary to fact. 

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Edit: 6th May 2021

Our current political system is filled with buccaneers: unscrupulous adventurer especially in politics or business that often practice sophistry.

Sophistry is an argument apparently correct in form but actually invalid especially: such an argument used to deceive.

If it is not the truth, the whole truth and nothing but the truth, then it is sophistry.

Lawyers are modern sophists – they don't fight for justice, instead they are mercenaries for hire, professional debaters to "prove" one's innocence regardless of guilt.