Death is a matter of evolution
Indeed it's the opposite. Evolution is a function of organisms attempting to delay death or prolong life, either for the individual or the colony.
no god needs to exist for us to die.
God may not need to exist for us to die, but His Grace does help many live a more peaceful life and not fear the uncertainty of certain death.
Atheists like to portray themselves as too intelligent to accept the dogmatic specifics of faith, but they still can't explain the origins of life. Bla bla bla the primordial ooze bla bla bla, but when asked to define the compounds of such and their origins their arguments start to fall apart.
True, we understand the basics that extreme gravitational pressures of a supernova that likely preceded the formation of our solar system created the existence of the minerals and chemicals needed for life to exist, but where does gravity come from? How does it relate and interact with other universal forces that we can't define? We can define, measure, and predict gravity on a terrestrial level and even on the level of our solar system, but on a galactic level it becomes less predictable and on a universal level it's completely bonkers. The more we learn the more questions we have.
Belittling those with faith is a way for those with marginal intelligence to make themselves feel superior to others.