I agree it's sad when someone dies and we lose their benefit to humanity, but like you said that's an emotional response and subjective. My point is that to truly understand and cope with death, emotions need to be set aside and it has to be looked at objectively. Being as it is human nature to be emotional and mourn loss this is impossible for someone to do 100%, but also a goal that one should strive for.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell