But it does make a difference whether someone does these things to you or lets you perish through your own insistent choice.

Rosangela - does God have the power to prevent rapes now? How cruel that He does not! Does God have the power to heal all sickness now? How cruel that He does not! Or is there another principle at work going on?

It was generally believed by the Jews that sin is punished in this life. Every affliction was regarded as the penalty of some wrongdoing, either of the sufferer himself or of his parents. It is true that all suffering results from the transgression of God's law, but this truth had become perverted. Satan, the author of sin and all its results, had led men to look upon disease and death as proceeding from God,--as punishment arbitrarily inflicted on account of sin. Hence one upon whom some great affliction or calamity had fallen had the additional burden of being regarded as a great sinner. {DA 471.1}

Thus the way was prepared for the Jews to reject Jesus. He who "hath borne our griefs, and carried our sorrows" was looked upon by the Jews as "stricken, smitten of God, and afflicted;" and they hid their faces from Him. Isaiah 53:4; Isaiah 53:3. {DA 471.2}

God had given a lesson designed to prevent this. The history of Job had shown that suffering is inflicted by Satan, and is overruled by God for purposes of mercy. But Israel did not understand the lesson. The same error for which God had reproved the friends of Job was repeated by the Jews in their rejection of Christ. {DA 471.3}

In fact I don't see a difference between killing and letting die. I do see a difference in the purpose and reaction of him who does/permits it. Let's say you have a dog.
Scenario 1: You build a barbwire fence to prevent him from having access to an area filled with quicksand. Every day he tries to go to the other side, and every day you try to teach him not to go there. But one day he diggs a hole under the fence and goes into the quicksand, and you let him die there because that was his insistent choice. While the dog is sinking in the quicksand, you just stay there and watch him die.
Scenario 2: Your dog is wounded, suffering miserably, and, although this is very painful to you, you kill him.
In the first scenario you let the dog die, in the second one you kill him. In which scenario do you really love your dog?

But what if you try to rescue your dog and he snarls and snaps at you so that you have no choice but to give him up to his choice?

But what if you try to rescue your dog and he snarls and snaps at you so that you have no choice but to give him up to his choice?

Who inflicts suffering? God? NO. It is Satan!