Is "God" really exist in this world?

This is a question I always ask myself, is "God" really exist in this world?

If yes, why we unable to see or meet "God"? In Chinese, Western or Eastern history, there are written fact that a "God" come among the people and show their magnificent power such as "GuanYi", "Buddha", "Monkey King", "Jesus", and "Allah". Why in this modern world, they no longer exist? There is no people can fly, or no people will die today and alive in the next day. It is because the people are too many until "God" unable to help all. Everyday, and every festival, people are praying for the "God" for good health, more wealth, safety and prosperity; is it really work? They are still many people that is starving, live in poor, having disease and more criminal committed criminal offence. People that believe in "God" will said that this is life and everyone should go through sadness and happiness to fulfill the life destiny. But why? Why can't people all just live in happiness and no sadness exist.

In my opinion, all the written history and things about "God" is a thing that being created in the past for people to have faith on something and believe in life. In the past, people are living in poverty and don't have proper education and there are people whom consider themselves as "Royalty" are abusing other people whom consider as "Slave". In order to stop all this abusive, the only way is the make the people have believe in something that are extraordinary such as "God". "God" will protect you from harm as long as you have faith in "God". "God" also will do justice to the people that committed crime.

If "God" really exist, I really hope my question will be answer and if there really is a "time machine", I really wish to go back to the old day to verify the story. When there is news about something terrible happen such as murder, rape, robbery, and most serious terrorism, why there is no "God" to prevent all this? I also hope "God" really exist and give help to those innocent people.

In my own interpretation, "God" is created to provide "HOPE" to people, something to believe and have faith in.