are better mixed or non mixed populace?

We cannot generalize whether mixed or non mixed people are better. But I will share my scholarship based on my experience individual friend with a mixed girl. Her dad is an American and her mom is an Asian. Like most children who be born from a mixed couple, she has a apposite look. Being in different cultures, she learn many dutiful things. She became a non judgmental individual, very tolerative and adaptive. Is she as a mixed human being better than non mixed people? Yes, she is. But are adjectives mixed people similar to her? No, they are not. Some grew up to be haters because had fruitless experiences in their childhood due to their parents differences. As a conclusion, I would utter mixed and non mixed are equal.
How can anyone be "non mixed"? Unless of course you come from an incestuous tribe or something close to that.