My opinion about the "point of God"
I am really going to throw a monkeywrench into the statement, because there is no point to God. Your basic assumption is that God is a creation of the human mind, this is ( in my opinion) is seriously flawed.
The reality is, God exists outside of the human mind. Humans have an innate desire to find order, our minds are structured to find reason and meaning. As such, we are born with the desire to find GOD.
Now, the search for God ( ie reason, order, and design) has been undertaken by virtually every culture or civilization since the dawn of time. Many different theories have been produced as to the nature of God. It is up to the individual person to decide which theory fits best with the concept of order, design, and reason.
In my opinion, the only spiritual concept that makes any sense is Christianity. However, I do not apply that to "religion". To say that the (for example) Catholic concepts are absolute, and correct with what God wants, is flawed. Instead, I find that Jesus, his life, death, and return to life, fit best with what our basic human nature has indicated we should have desire for.
As such, any attempt to reject the idea of God, would fly in the face of basic human nature. Instead, it is based on "learned" human nature.
Essentially, the reasons for Athiesm are:
1. The desire to not be held accountable for your actions.
2. The desire to be all powerful, and/or in complete control.
3. The hatred, or dislike for religion, or more specifically, the people of a religion.
Although there may be exceptions to these reasons, or other reasons for Athiesm, I have never heard, read about, or talked to, an Athiest who didn't fall into one or more of these catagories.
So, a better question to ask would be, what is the point of humans?