How much of these behaviors (lack of humility, intellectual laziness, etc) that repulse you are driven by evolutionary adaptations to living in a social group and maintaining your status and reputation in your tribe? Agreeing with the popular view in your tribe, and agreeing with tribal leaders to display loyalty, probably has some fitness advantages. Have no empirical data for that, but it's worth considering as an alternate view, especially if you "strongly wish you believed otherwise" ... humility and integrity may not get a chance to step up if higher priority instincts are kicking in to produce these effects.