Our conception of death determines in a very real way how we view life.
How so?
For instance, if we see death as the end of our existence we will tend to be selfish, greedy, and self-absorbed. After all, with this world view, the only thing we have is today, so morality is only utilitarian—to get what I want and to look good, since if we don’t get caught doing something against morality or the law, we have succeeded. From this perspective there is no accountability other then the here and now! So go for it. As the saying goes, “Live for today, for tomorrow you die”.