Santiago often expresses pity for the fish and calls it his friend. why then, does he want to kill it so badly?

Santiago often expresses pity for the fish and calls it his friend. But he wants to kill it so badly because of his pride as a fisherman. He believes that being a fisherman, he should be able to kill the fish with no hesitation since he is doing that for living.

It should be at the center of any map going vertically: the prime meridian, as it passes through greenwich,  england, is considered 0 degrees longitude