Whats the point?

Sun hardened face of ol' Ned hid eyes wisened over years on the sea. Voyages had taught him a lot. His palms were as hard as the ropes he pulled aboard the Beagle. He took a fancy to young Charles' work and would often listen to him. After listening intently to Charles' theories, he sighed, "If humans didn't interfere with nature, nature would keep perfect balance of all its creatures. If self preservation is so important, then just for the sake of survival of the human race, the next step in the evolution of humans would be loss of the ability to think. The ability to think has actually jeopardised our survival more than anything else. We multiply and kill. Whats the point?" Saying that he traced the crevice like lines on his right palm with the thumbnail of his left hand and thought, "Them monkeys seem to have so much fun!"