Scriptures tell us, in different ways depending on our denomination and affiliation, that God created the world and everything in it, including us. This is creationism in a nutshell.
Standing in the other corner, all gloved up to knock the daylight out of creationism, is science. It tells us that we came out of complete lifelessness through successive mutations goaded by the need to survive. This is Evolution, a view so widely accepted that the use of capital E is almost justified.
All our experience and knowledge point to the rightness the Evolution idea. It doesn’t totally preclude the validity of God, but it does make it more likely that we humans created God. (It must be just us humans for we don’t see a cat saying Lord’s grace before devouring a mouse!) And, given the inconveniences caused by the God concept (wars, crusades, the dark ages, ethnic cleansing, religious riots, terrorism and so on), it certainly looks like a blunder.
No wonder Nietzsche said,
On the other hand, if God did create man, then all the stupid things that we do — wars, crusades etc. + this blog — do point to the fact that we are a blunder. We must be such a disappointment to our creator. Sorry Sir!