God's definition may not be as accurate as we most know

Just a silly thought of where we might have come from. Furthermore, who created us? No one knows for sure, but some claim it was God. However, no one has seen God or the actual creators to the best of our knowledge. Moreover, those that claim to have seen God show us no proof. One may wonder, why does God only appear to those who believe in him? What is the point of that if they already believe in God? Wouldn't it be more rational for God to appear to non-believers to make them become Believers? Furthermore, they can spread the word of God and promote his existence. It is not to say that there are no creators but rather to say that God's definition may not be as accurate as we most know it.