Naomi, I think your post is rational and certainly not bleak. However you seem to be generalising on some particulars in blaming religion for unhealthy neuroses. Religion has more serious and historically established crimes to answer for than "mere" nervous breakdowns, as argued in many other AB debates.
What most scares me most is the human invention (via our god-invention) of the concept of everlasting life, particularly re-incarnation! Imagine dying and then popping-up as a spider with legs pulled off by a curious baby then eventually back again as a cat run over but not killed and so on with no way off the carousel - not even suicide! Even heaven seems awful, being bored but never bored-to-death.
Nope I cling to my scientifically-based belief that all life-forms are a temporary blip in the laws of thermodynamics which will eventually triumph via the golden rule of entropy (total disorder tends to a maximum). Such tempoary blips are common and can be explained by chemistry and physics. Indeed the only religious solid truth we know of accepts the law of entropy in "ashes to ashes, dust to dust"
I do not fear death as it's inevitability is our most proven fact of life, it's the "timing" and "how it happens" that's scary.
Fundementally I subscribe to Heinrich Heine's philosophy: "To sleep is good, to die is better but by far the best is never to have been born at all".
Call it bleak if you like but it solves all problems from that of the earwig thro' to human kind in one fell swoop, lol.