Ignoring the tradeoff doesn't make it go away, and if you don't consciously put a value on a human life, you'll probably wind up far from the Pareto frontier. In this case, for instance, thinking in terms of deaths-per-TWh is exactly what you want in order to fulfill our energy needs with as few people dying as possible. If a little "ghoulishness" saves lives, then I'll happily be a ghoul.