I find abortion mortally repugnant. I agree it should be allowed in the instances you carve out. However, the ethnicity of children being born is highly relevant. Fast forward 10,000 years. What happens to civilization and all you hold dear and value in this world is the Earth was populated by 90% africans with and average IQ of 75. The misery, violence and corruption would make the planet are horrible place to be. In other words - it would look like Africa did before colonization. People living short, violent lives riddled with disease, starvation and constant tribal warfare.