people have forgotten that God warned us that this is a decaying world. It's time is limited.
God didn't bring death and decay to this creation, Satan did. This world will decay, and finaly cease to be.
God gave us salvation from this world, and a limited time for all to seek it. He also gave us signs to look for to let us know when that time draws near. he also told us that regardless of what time we live in, we only have one lifetime to find the narrow path to salvation, rescue to the new world he created where death and decay does not exist.
Nope, don't give satan more credit than he deserves.
Death was ushered in by man, in Adam:
Therefore, just as sin entered the world through one man, and death through sin, and in this way death came to all men, because all sinned