I cannot comprehend what it would be like to care so little about whether there is a God, or whether we will survive after death. I just don't understand how a mind like that works. It makes me sad.
Maybe its your mind thats "working".
Cheer up! Some would not understand empathize with your melancholia. For example: "I cannot conceive of a God with a will of the kind we experience in ourselves. Neither can I, nor would I want to, conceive of an individual who survives his own death. Let feeble souls, from fear or absurd egoism, cherish such thoughts. I am satisfied with mystery of the eternity of life, with a glimpse of the marvelous structure of the existing world, together with a devoted striving to comprehend a portion, be it ever so tiny, of the Reason that manifests itself in nature." -- A. Einstein, 1931. Actually, Einstein thought of the "traditional afterlife" as a prison (and seemed very pleased not to believe in it in the traditional sense). I got the same feeling reading Siddhartha - that Herman Hesse himself was sad for those who saw themselves alive forever. Either way, there's plenty to be sad about here and now on Earth. So perhaps my suggestion to "cheer up" was untimely. Naahhhh - cheer up!