A fact that is not a personal experience is difficult to trust. Even if I trust the source of that fact, I am often not sure if I understand the fact properly. Anyone who has ever tried to understand a math theorem might relate.
It is entirely rational to trust more in your personal bias. In fact, I would argue that the only way to trust a fact is to make it somehow into something that you can personally experience. For example, to understand a math theorem, it helps to look at lots of different kinds of examples where it holds (and where it doesn't).