Cognitive dissonance (which I explained in more detail here in regard to climate change) is something that impacts literally all of us. It is probably THE major reason that new discoveries take years to be accepted and why confused and irrational traditions are maintained for generations. The fact is that human evolution so far occurred without science, and so what you heard most often or what made the most sense to you was safest to accept as true. Unfortunately, today there is at least as much disinformation floating the internet around as well-researched articles and we have landed in a position where most people are unaware that many organic crops are in fact sprayed with pesticide, that we are losing species faster than ever before, and that GMOs are not somehow inherently bad.
The fact is that we are all sometimes wrong, especially if we are exposed to lots of people who haven’t bothered to get informed. The trick to not being ignorant is to do your research, check your sources, and remain skeptical of yourself and others. If you start to reject a piece of information which you know nothing about: stop and consider that you may, in fact, just be experiencing cognitive dissonance.