Anduin Lothar made the supreme sacrifice for his people. He lived for them, and he died for them, at the end of a long life dedicated to their welfare. He lived his entire life in the saddle, riding from adventure to duty, fighting first for himself and then for everyone he loved. Last of a bloodline that could claim to be the kings of all humanity, Lothar died not as a king but as a soldier fighting to save his world from those who had willingly sold their souls, their children's lives, and their world to the bloodlust of demons. In life, he had repeatedly balked their victory. In death, he secured his people's future.
There will never be a warrior as great as Lothar. No one, no man, no orc, no one can ever exceed his accomplishment. Uncompromising, he brought forth a compromise that welded together disparate races in a union to defend themselves and their world. Stern, he managed to nurture a band of heroes who would stride forth with his name on their lips and his example in their hearts to plant it as a standard on a foreign world. Aged and weary, he carried his best friend's nation and his best friend's treasured son to safety and brought both through the terrible storm to be returned to their rightful home.
Without Lothar, there would be no humanity left. Without Lothar, orc slaves to the Burning Legion would have destroyed all of the Eastern Kingdoms and, in thrall to their demon masters, laid waste to a second world. Without Lothar, everything changes. This is the life of the Lion of Azeroth.