A man was not created to die. However, through Adam sin (NOT sins plural, but sin singular) entered the world. Through sin entered death.
God stated the man’s problem from that point on like that “to-die you-shall-die” in Hebrew (usually translated “you shall surely die”, which misses the point: death is both a process and a final destination). So sinis the force that drives the process of destruction, corruption – i.e., death as a process, which leads to death as a finality.
The principle of entropy (attested to by the 2nd law of thermodynamics, for instance) says that every process occurring in nature occurs in such a way that the sum of the entropies of all bodies taking part in the process is increased.
A necessary corollary of this that it’s impossible for the universe to be
- infinitely old, and
- entropy to be operational all throughout that time,
since that would mean entropy would have had to run infinitely long by now, which would in turn mean that the universe would be in complete chaos by now, and there would be no me or you or us.