Walking in someone else's shoes, will give you sore feet
When I was a little girl, the man in my life was strong, funny and protected me from all my fears. When I grew up that same man become one of my fears. Torn between love and hate, the teen years were a spiral of finding yourself and hiding from the rest of the world. Relief and extreme sadness entered when the man left to find another life far away. Then the confusion of comfort and longing made many thoughts tiresome as you would wonder where he was. Was he OK?
Everyone has a story that no one will actually understand. There is no truth to "I know how you feel". Even when situations are the same, no two people will know exactly how the other one really feels. We judge other feelings and we sometimes judge harshly things we do not understand.