There is no doubt in my mind that faith in God at the times you described above give hope to those who survive “knowing” they will see their loved one again. However, happy thoughts or happy beliefs don’t make it true. I rather follow the evidence in order to know if my belief is true and then deal with it in a mature and responsible way. Others have the will to believe despite the evidence and I prefer to know based on the evidence. Don’t feel sad for me as seeing reality and using reason has led me to a calmness that many believers get from their faith. I see my born again wife use her faith and relationship with Jesus in a very positive way in how she handles stress and forgiveness and at times I envy her but I’m not wired that way.
When trying to find good reason to what I believe I came across a missionary physician who has transitioned to deism while remaining in the closet described the process of deconversion as follows:
“I see Christianity as a square peg and reality a round hole. The square peg doesn’t fit in the round hole, so we start whittling and sandpapering the corners, trying to make it fit. The tools we use for whittling and sandpapering are collectively known as “Bible commentary”. We find, for example, that the earth is very ancient, not a few thousand years old, that there are biological bases for illnesses like schizophrenia, not merely demon possession, that the Bible had a lot of editing as it was put together and doesn’t appear error free. We incorporate these and other items into our Christian worldview, slowly sandpapering the edges and modifying our Christianity. When we finally get our Christianity smoothed down so that it can fit into the round hole of reality, we are relieved—until we realize that what we are looking at is no longer a square peg but a round one, no different from the round peg of Naturalism that fits into reality. Can what we have left of the peg, now completely rounded, still be labeled Christianity? No, it is Naturalism (or at best, Deism). Hence the loss of faith.”