That would actually be my main question to any creator god. What's the script with childhood leukemia? Doesn't alike a loving caring god to me.
Since sinner Satan is the 'god' of this world of badness - 2 Corinthians 4:4 - then it is No surprise that Satan is the one who challenges Job and us - Job 2:4-5 - 'touch our flesh.....' (loose physical health) and we would Not serve God.
Sinner Satan is that un-loving, un-caring 'god' - Revelation 12:12,9
By breaking God's Law it was Adam who set up People Rule as superior to God Rule.
The passing of time is showing that man (people rule) can't solve the problems.
This is why we are all invited to pray to God for Jesus to come ! - Rev. 22:20
Notice why: Come and bring ' healing ' to earth's nations - Revelation 22:2
While Jesus was on earth he was giving us a sample, a preview, a coming attraction when he healed sick people.
Jesus was showing on a small scale what 'healing' he will be doing on a grand-international scale.