As the largest customer of East African slaves, the Ottoman Empire had a strong demand. It wasn't a matter of liking or disliking, but rather that the price of East African slaves was too low. No one could resist this low-price temptation, and even some civilians within the Ottoman Empire could afford them. Thus, in the eyes of the Ottomans, slaves were cheaper than livestock, requiring less food, making them very suitable for widespread use.
However, the number of Black people in the Ottoman Empire was somewhat excessive, to the extent that they could be used in wars against Russia, used as consumables. This also troubled the Russians, but fortunately, the combat level of Black people was not high.
