He was not just anyone, he was the demon Lord of the West and not just anyone would do for him, unlike the other Lords who could just mount some bitch and pup her. That is why he was the strongest and most feared Lord, he did not come from just some bitch, his mother was just as strong as his father. That's one reason he hated his brother and his father, his great father mated a human woman and bared Inuyasha who was nothing compared to him. He would have strong son's and they would be feared.