To be racist is to admit that you are a dull, vapid person. It's an admission that you are so intellectually, emotionally and spiritually shallow that you can only enjoy and connect with other human beings in the most superficial of ways. There is no depth to you. There has been no growth in you. You are stunted. You have been wasting your time on this planet instead of maturing and expanding your connectedness with the gift of human life.
If you have been growing and maturing, your ability to delight in other people isn't limited by skin color, culture, language, national background, or religion. You understand that there are whole universes within us beyond those few superficial differences, and we are able to connect with each other on all those various levels in a limitless number of ways. You don't fear and shun the differentness of others, you take immense enjoyment from it.
If you have not been growing and maturing, you lack the ability to enjoy and connect with people who are different from you and your family. You are unaware of the universes within you and within others, so you believe your ability to welcome others into your neighborhood is limited to the most surface-level aspects of them like their skin color, their accent, the way they dress, or their religious beliefs. It's all you understand about yourself, so it's all you value in others.
This is a symptom of a shallow, uninteresting life. Your mind is boring and superficial, because you set up all these walls around it to stop it from growing. Your heart is hardened and cloistered, because you set up barriers to keep people out. Your spirit is stagnant and impoverished, because you placed too many limitations on its natural outpouring. You're still splashing around in the kiddie pool of the human condition.
It's a waste of a human lifetime to live like this. Open yourself up. Soften your heart. Broaden your mind. Make connections. Delight in the myriad manifestations with which humanity can show up. There is just as much dazzling beauty in other humans as there is in the natural world, and if you can't see it that's a defect in your own character. If you don't learn to grow beyond those limitations, you cut yourself off from unfathomable depths of the human experience that you could instead be taking great joy in.
Don't waste your life on racism. Don't waste your life on Islamophobia, homophobia, transphobia, or any of the other crude ways we cut ourselves off from the connectivity and appreciation that we are all capable of. Deepen your roots and grow into a mature human being.