I actually agree regarding truth. However, some folks think differently, and I tried to convey my understanding of their thought process (which I don't share, so may imperfectly comprehend). Some people legitimately believe that lying to others about reality which would discomfit them actually is better than to tell the truth.

My particular experience of this mindset involves personal relationships, in which infidelity was involved. I vehemently disagree that it was better that I simply not know our mutual commitment wasn't really mutual at all. They felt that if I simply didn't know they were sleeping around I would be benefited, and this is why I understand that the best evidence of their affection for me was that they lied to me.

That was the only way they could maintain the relationship with me, as they seemed incapable of actual monogamy. I felt it was fraud, and eventually appreciated learning their true character, as my own commitment was being availed them, while they did not feel it was harmful to me that they weren't meeting their obligations, and felt only my knowing the truth would harm me.

They were wrong, but that's what they said they believed. Thus, in their mind, lying to me was beneficial to me. I reckon plenty of politicians seem to evidence the exact same mentality.