Because of our negativity biases among other factors, we tend to make assumptions when we do not know something. This quite often results in a lot of anxiety.
As a practicing clinical psychiatrist, I get the opportunity to treat many folks for a variety of different conditions. The most common by far is anxiety.
“To love at all is to be vulnerable. Love anything and your heart will be wrung and possibly broken. If you want to make sure of keeping it intact you must give it to no one, not even an animal.