Your vision of how people are when they’re honest makes me think the universe would be best off if we all just glassed each other and put ourselves out of each others’, and everything else’s, misery, Arrendis. It’s a wretched and limited version of the thing.
In my experience the truth of people’s feelings is a many-faceted thing that probably can’t even be modeled in a mere three dimensions. Anger and hate are often sincere, sure. So are more fragile, tentative, or complicated feelings that rarely find expression in a heated exchange. It’s easy to be thoughtful with a cool head; hard with a hot one.
But go on believing those of us who want peace are all such liars. I’m sure it’ll never cause you or things you care about any misery at all.