Aside from lying to save the life of an innocent person, lying is harmful to ones own sense of self esteem and integrity.
Like ‘they’ say, ‘To lie to anyone else, you must lie to yourself first.’
Most people lie for selfish reasons, for personal gain, failing to see they are really harming themselves the most.
A healthy human psyche cannot feel good about itself if it is guilty of deception with others.
I am honest because I like the woman in the mirror, we can make direct eye contact! ;-)