Because apparently he created us in the first place. I don't get the god stuff... To be honest, Stalin was pretty bloodthirsty seeing as he signed death warrants every night... but he was still working towards the good of his country.

God makes man. God makes rules. Man breaks rules. Man breaks all the rules. God decides to start over. God finds one good man and his family. God decides to save them as starters for new world. God skips giving everybody else swimming or ark building lessons. God starts over. When you create for yourself, it comes with the option to destroy your creation. When you can create your own world, you get the right to judge other creators. Stalin WAS a bloodthirsty atheist monster. But he was a human being and subject to be judged against the standards of other human beings. God was (is?) the great creator. But you do have to measure Him against time and place. God the Loving Father left His last official paperwork almost two thousand years ago. In that time and place, the "honor killings" of today would seem like letting your child get away with murder. Given the behavior of humanity today, only a loving Father and Creator wouldn't wipe humanity out again and start again with Beta3.0

Start by looking at the motivation. Stalin was a mere mortal and could not see the future. He was limited by his own prejudice and hatred. He killed because it benefited him, both financially and by cementing his political power. God is omnipresent. He knows the future and the past because He is in both simultaneously. He is not bound by time or space because He is outside time and space. He did not unleash the Biblical flood because He just didn't like the way someone looked or because it would benefit Him financially. If God can create the universe, what would He need money or power for? He can create whatever He wants. Whenever you see God unleashing a disaster or a war in the Bible, it is because of the sin and evil of a people. He does it because He can see what they are and where their sin is going to take them in the future. He sees all the people that are going to be harmed by these people. Before the birth and death of Christ, that was how He dealt with evil. It would be the same thing as knowing who Hitler was going to be when He was a little boy. If you could see what he was going to become and how many people would die at his hands, would you be able to stand by and let him grow up? I don't have the power to see that, but if I knew what he was going to become, I don't know that even I could stand by and watch that. God did know what Hitler was going to be, and knowing that, I wish He had done away with him before millions of people died at his hands. I wish He had done it to Stalin too. But now that God has a process of redemption in place, by which people can be changed, I guess He doesn't do that anymore. Or maybe He does and we just don't know it, because the worst ones haven't lived to grow up. I'm not a theologian and I can't say that for sure. I think the problem with the question lies in assuming that all death is the same and that all people are innocent. Some people worship satan. Some may worship satan without realizing it. They are worshiping an idol or themselves and don't realize it is the same thing. I went along with that point of view, that all deaths are the same and all people innocent, for many years, until I was brought face to face with evil and had to accept that it exists. That is why the devil prefers to stay anonymous. As long as he is seen as a cartoon character and a joke, we don't have any defense against him. When we see him for who he is, it changes everything.