Before I hit any individual questions, I'll have you know that I know that God is beyond any human 'reason.' 'Reason' is just extensive probability-finding.
1. Amputees decided not to let the limbs' sicknesses heal. ("Heal," "fester beyond perception," whatever)
2. Because the hungry people do not open their eyes to the opportunity for food.
3. 'Death' in the Bible is a metaphor for what relatively happens when one sins ... ... ... ... ... ... ...

"Because God is imaginary?" Yeah, like love, charity, Capitalism, government, profit, money's worth, and all the other things we create with the help of Infinite Intelligence.