Earth song!

There is something I wish to understand "How can a God who created life demand blood back as a sacrifice"? Why would humans who seek to control humans paint HIM so black yet wish to survive? How can Africa that seems to tolerate ritualistic human sacrifice think that they can grow? Civilisations that thrived on the ignorance of people or kept their people ignorant have been extinct, including the blood thirsty Roman Empire! How is it possible that nations who built their monuments on the heads and souls of their or others people wish to survive? I don't think God punishes He remains Omnipotent by staying away from petty things such as killing his own creation! In my opinion justice seems to take so long because He keeps giving another chance for change! Do we today as people not see what we have done to the earth, don't we see what we do to our neighbour in our hearts?