I do not like to admit it, but I have fears. Everyone does, including you. The chemical changes in our human brains control our emotions, like fear. They allow us to interpret thoughts and actions and since everyone thinks and feels differently, we have different fears (if you keep reading, you might discover mine at the end of this post.)
People "Don't Do Vaccines"
A common fear is of the unknown or a threat. Imagine you approach a dark tunnel. Is it intimidating to look at the pitch black and not know what is there? Where does it lead? Where is the end? Anything could be there. That unknown factor impacts the situations and decisions people make on a regular basis.