Most, if not all of us, have our own lives and experiences as our reference point for normal. It is normal because it is what we know as normal. It is normal because it is our experience. It makes sense to us because it is what we know. We become so a costumed to defining normalcy by our standard that we can become judgmental about those whose version of normal is different from our own.
Recently I went to visit a friend. She lives in a different part of the country, she likes different things, and she has a different lifestyle. Her life choices, experiences, and preferences are not bad, they are just sometimes different from my own. None of these things really define her as a person, but I realized that I focused on the differences. The different choices became things that I started thinking of as wrong because they were not the choices I would make. This is a good friend and a good person, but I started making judgments because of little things. It was not intentional, but it did happen.
We all need to guard against the part of us that seeks to judge. We have to be diligent about reading that our way is not the only way to do things. It is when we focus on the outward things that we exclude others. God has called is to see beyond the outward things to realize that all of us are created on the image of God.