Did God make man in his image or did man make God in his image?

Clearly the standard answer from The Bible and most other historical and literary sources is that God made man in His image. However the Wording of the question, and the fact that the author failed to capitalize "god" though it was used as a name, indicates that this person most likely disagrees with this answer and is instead raising a philosophical question. In other Words, is God real, or did we make him up? (the questioner is clearly interested in the existence of the monotheistic God of Christianity, Judaism, or Islam, etc..., as the question refers to "god" in the singular and uses a familiar biblical phrase)

It certainly sounds like a reasonable hypothesis to say that humans could have made up a god to suit their needs; Needs for security, purpose, love, immortality. Of course most people throughout history and today, both educated and not so, have concluded that this hypothesis is incorrect. One cannot say this with scientific certainty, but one also cannot support this hypothesis with scientific certainty. In the end this question has been argued in one form or another for most of human history. A wiki answer will hardly be capable of touching on more than a small sliver of the evidence, which would not do justice to the question.

Good luck in your search.