You're wrong.
The bible clearly states that when they would eat from the tree of knowledge of good and bad that they would die.
That was the beginning, the first choice of doing wrong, and so they started dying.
Yes, satan rules this world and so do people.
Satan and people influenced by him, by others, by themselves, they change nature, mix matter, treat themselves, animals, earth bad.
It is common sense that sickness comes from this.
God does not "take people" nor make them sick.
Bad Things Happen to Good People—Why? — Watchtower ONLINE LIBRARY
The bible clearly states that when they would eat from the tree of knowledge of good and bad that they would die.
That was the beginning, the first choice of doing wrong, and so they started dying.
Yes, satan rules this world and so do people.
Satan and people influenced by him, by others, by themselves, they change nature, mix matter, treat themselves, animals, earth bad.
It is common sense that sickness comes from this.
God does not "take people" nor make them sick.
Bad Things Happen to Good People—Why? — Watchtower ONLINE LIBRARY