Everything isn’t just black and white

We use so much time, thanking the people who does something good to us, which is great! But why don’t we ever thank the people who has treated us badly? What i mean is…haven’t they affected us just as much as our good friends? They have helped ud just as much as anyone else, becoming who we are today. Imagine what the world would look like if this was a reality, i can’t really figure out if it would be positive or negative. It is so hard to change your mind on people who already made a bad impression on you, but i am just trying to be positive.