ok lets try. But you will never now the answer until you have to make the discission:
1. How much money could convince you to kill a man?
not all the money in the world
2. Would you trade the lives of 100 rapists and serial murderers for saving the lives of 1'000'000'000 people? If not 100, how many? Would you trade them for curing cancer? (which may save potentially infinite amount of lives in the future)
no, I'm not God
3. Suppose there's a switch. If you don't touch it, 5 random people die, if you press it, 1 random man dies. Would you press the switch?
no, I'm not God
4. Suppose now, you stand behind a fat man. If you push him in front of some train, he'll die, but the train stops. If you do nothing, the train passes by and will kill 5 people. Would you push the fat man in front of the train to save the other 5 men?
no, I'm not God
5. Imagine the closest member of your family, or just the one you love the most on the world. Would you kill 1'000'000'000 people to save them, or would you let them die?
no, I'm not God
What happens in the world, who dies and who doesn't is not in my hands. I'm not going to play for God, I have not the right to decide who deserves to live and who deserves to die. On what ground would I decide that any way?