Unlike an opinion, a fact can be verified. The two main types of lie I was referring to in my original post are misrepresentations of fact (a person claimed to have done work that I did, so in addition to not getting paid I was also fired and he now has my old job even after I showed photos of the work and had 5 witnesses corroborate), and misrepresentation of intent (I'll call you, and the call never comes; I'll be there at such-and-such time, and the person never shows).
These kinds of lies completely erode even the most basic trust I have not just in those who tell the lies, but also those who believe the lies and, over time, humanity as a whole. I have gotten to the point I can't believe anything anyone says that cannot be verified; I want to see the evidence. If someone tells me the sky is blue, I look up; if they say the grass is green, I look down.

Not exactly sure what you mean by 'Narc traits', but I have found that liars certainly don't like being confronted with their lies or the damage they cause... There is no guilt, no shame, only deflection and derision.