Before I knew of God, I was not afraid of death. I was ready to die any day of the week. I never thought I would live past the age of 13. I figured I would get shot and die in the hood. Time passed and I was still alive. As I learned about God, I found out there was a hell. Thats when I feared death. Because I knew I deserved to be there. I confessed my sins to Jesus, and he changed my life. He made me a new person. I wish we could all live, and that nobody would die. But death is natural. It's a transition to a new life. It took me a long time to believe that God could forgive my sins. If in the bible he killed some of those who sinned against him, just imagine what he would do to me. But every time I prayed he didn't convict me. He comforted me. There were times I was in trouble/danger and I would pray... and I would feel like everything will be okay. And it always turned out okay. Many people that say are "Christians" don't even have Jesus in their heart.
They are not saved. How do I know God exists? First, when "I" looked for him, I found him. He didn't show me miracles or the "proof" I needed to believe in him. Second, I knew there were bigger powers in the world that many don't know about. My 270++ lb aunt, went down to around 100 lbs over night. Not exaggerating. They did witchcraft on her. I have also met different types of witches. I also remember an incident where an old friends family member was having an exorcism done on their house. The doors and walls would shake. And they feared the name of Jesus.
You blame God for the bad but don't see that humans are the ones that are doing the bad. God already won. Jesus stepped down from Heaven to die for us. So that we don't have to burn. Jesus didn't come to spread peace but he came with the sword. Just as Jesus is alive, so is Satan. Ever since Adam and Eve sinned, it has been war. But we won. Its been told by God. Not one prophecy has failed to become. Infact the bible is the only book with prophecy. I don't know why some live and some die. But I do know it happens. God is just. He will reveal himself if you look for him. If we believed in Jesus, why should death be feared?
You ask why God did this and that but fail to realize he is God. Creator of all things both good and bad. He can do as he pleases. But what he does is right and just. We don't get saved by works, but it's by Gods will and grace. God really does love you but thats only something he can show you. Read a bible. A King James bible. And if you don't believe in God thats okay. The bible has a lot of wisdom on just about every subject. It has a solution for any problem you're facing. Give it a try.