Your ideas are mind-blowing, to the point that some close-minded people might misclassify it as idiotic. I find them rather interesting. Mind sharing with me what your version of Christianity is?
I think the flaw here is that most Christians do not look at the reason why God used Jesus as a means to achieve salvation. Why did he have to use Jesus as a sacrifice, when he could've just erased everyone's sins as you have said.
I have to admit, salvation just by accepting Christ as Savior is too easy. Just like that? True the Bible says in John 3:16 "For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life." But I personally think there's more to that. People should view life in a different perspective.
When Jesus was about to be captured and put to death, he said in John 17:4 "I have brought you
glory on earth by completing the work you gave me to do." Paul even said in Ephesians 1:5-6 that "He predestined us to be adopted as his sons through Jesus Christ, in accordance with his pleasure and will--
to the praise of his glorious grace, which he has freely given us in the One he loves."
I guess then, according to those 2 verses, that God's purpose, why He used Jesus for us to be saved is for His own glory. I guess that explains the first commandment as well. The first commandment is "I am the LORD your God, who brought you out of Egypt, out of the land of slavery. You shall have no other gods before me." isn't it? That's how God is passionate for His own Glory that we are forbidden to have other gods before him. Why? Because His glory is at stake. In fact, If you read it carefully, you would notice that the first five commandments are directly for His glory. That's how serious He is with His Glory.
I guess this also explains why those people, whose priests were not able to explain why their loved one died early or those who had somebody close taken away from them or those Christians who suffer untold miseries, turned their back on his version of "Christianity". Those people may think, "How could a loving God do this to me? I just cannot imagine." Let me tell you that you are too selfish. (All hate's on me

) kidding, but I think we are too self-centered. If Jesus' life is for God's glory, shouldn't ours be as well? Jesus had all the right to complain about his situation? But did he? No, because he knew too well that his purpose was to glorify the Father as stated above. Shouldn't we be the same too, after all, we are created for his glory (Isaiah 43:7). The problem here is that, we tend to satisfy our self-centeredness in everything, even in God. We like John 3:16 because it is about our salvation, because it's a one-way ticket to heaven, because we simply do not want to go to hell. We are "Christians" because we want the blessings and promises of God to us. And then, when something goes wrong, we immediately let go of God. We immediately deny his existence.
What we have here friends is the answer to your questions. Why did God take away your loved one too early? Because it is what Glorifies Him most/ wants to use it for His glory, and life is not all about you nor your loved ones. Why did your bestfriend die so soon? Because it is what Glorifies Him most/wants to use it for His glory, and life is not all about you nor your bestfriend. Why am I experiencing this when I am a good Christian? Because it is what Glorifies Him most/wants to use it for His glory, and life is not all about you or your being a Christian. Why was pharaoh's heart hardened, resulting to the death of all the eldest of Egypt, including his? Because it is what Glorifies Him most which is stated in Exodus 14:4. Why was Shadrach, Meshach, and Abednego thrown into captivity and made servants of the King? Because when they were thrown to the fire, God was able to show his Glory by protecting his servants, thus, causing the King of Babylon (then was one of the most powerful, if not the most powerful, country) To worship God, which was stated in Daniel 3:28. This also caused everyone in the kingdom worship Him and Him alone. It's all about God and His Glory.
Everything God does is for His glory. He lives for His glory. He cannot live for his own creation because He is never-ending and we all know that His creation would end. He cannot live for the angels, because they have rebelled against Him. He cannot live for us humans, because we are not worthy. The only thing that He could live for, is Himself. If He would not, He'd be committing idolatry. Read the Bible in this perspective and you would understand it better. Why did God create galaxies so far, which are impossible to be reached by man? Why did He create oceans so deep, that man could not possibly dive? Because this is what Glorifies him.
May you Glorify Him always. :] To God be the Glory.