You're IQ is much higher than your average dindu, for example (70 in Africa which is medically retarded). If you create half-dindus with them, the offspring will have higher IQs than the dindu average, and thus gives them a competitive advantage in making a living.
In essence, you can use your seed to alleviate world poverty, raise world IQ, continue our bloodline, and hopefully as the world whitens they will be less hostile towards Europeans. You are by no means, useless my friend. You can do a lot of good in this world.