There is therefore now no condemnation for those who are in Christ Jesus. For the law of the Spirit of life has set you free in Christ Jesus from the law of sin and death. For God has done what the law, weakened by the flesh, could not do. By sending his own Son in the likeness of sinful flesh and for sin, he condemned sin in the flesh, in order that the righteous requirement of the law might be fulfilled in us, who walk not according to the flesh but according to the Spirit.
Because that’s literally the only worldview that makes sense. God is reflected in everything that He creates, and without Him, this whole system breaks apart.
I believe in God because He exists. Just like I believe that my wife exists. I talked to them both today. I appreciated the sunset that God made and the instagram picture that my wife made. To see that picture and not believe that someone created it would be foolish.