I think that, in part, human interactions are attempts by one person to dominate others. For many many people, that evil derivative of the sin of pride makes them crave overlordship. By proclaiming themselves "experts", they can have their personal opinions validated as "right". Look what happened with Lucifer. "As above, so below".
as far as the "experts" some of them are really over the top self promoters...."I'm this" or "I'm that" and "look at me" types...not all....curiously the one guy nobody likes(I like him) is probably the most pious....