Part of growing up is to understand that other people are unique and can't be blamed for what somebody else has done. A child will not understand this, because to him it is only "me and other people" that exists. Every company has to be blamed for the wrongs that some companies did, even the competitors. Every woman has to be blamed for the wrongs that some woman did in the past. Every person who disagrees with me on the internet is exactly the same person who has mistreated me in the past, they make me sick. And so on.
It's the easiest thing in the world to be distrustful. You're never going to be wrong, because you'll never take that risk and you'll effectively repel all people who don't like to be treated as if they were dishonest or be insulted at random. But what kind of people will you be left with?
