Their philosophical viewpoint does. They believe that the universe is essentially a meaningless place and that human beings assign meaning to it.
This basically leads to material comfort being the standard that they consistently fall back to again and again. Since being blind is inherently uncomfortable, they feel that it is better to be dead than blind.
Of course, empirically, there are hundreds of thousands of blind people who prefer being blind to being dead - but since this philosophy is inherently materialist without even a nod to the experiential, they not only lose track of God but even of other people as they engage in their sterile utilitarian calculus.