Most of the reason behind the creation of Ahuramazdan was to incorporate the wisdom of Astrology into Zoroastrianism.
A traditional Zoroastrian does not like Astrology. Some families forbid it.
An Ahuramazdan respects the choice he or she makes according to the various angles the planets are making to each other.
I have spent many years looking at the angles of planets to each other. They have been shown to correlate very well the mood of people. The best test the stock markets.
Just look at http://stockstars.blogspot.com.
I also spent many years looking at the effect of the Moon.
Look at http://iranastrology.blogspot.com
One of the most important questions we Iranians have is:
"Who created The Zend-Avesta?" We know that Zoroaster wrote the chapter called Gathas. But who were the authors of the other chapters?
But what is an more important question is:
"What do we call the people who wrote all the chapters of The Zend-Avesta?"
My answer is that he or she must have been an Ahuramazdan. So if you want to reach out to an old Iranian spirit that is older than Zoroaster, you know what to ask for. He or she would be an Ahuramazdan.
An Ahuramazdan will be looking at and respecting all the chapters of The Zend-Avesta.
The Ahuramazdans who wrote the whole of The Zend-Avesta wrote about concepts that are not in Gathas. They are much older. They write about concepts that did not make sense to a monotheist.
Most of the older parts of the The Zend-Avesta than Gathas talk of two forces.
An Ahuramazdan sees himself or herself as having the right to chose. We know that in Astrology there are always plenty of choices available.
An Ahuramazdan knows that the choices change in time. There is no absolute eternal never changing truth for all. In contrast different choices are being created all the time. Each moment is special.
The Ahuramazdans referred to these choices as Gozinesh in The Zend-Avesta. Ahuramazda gave us the freedom to choose. The Ahuramazdan wisdom invented Astrology to map out space and time.
I looked at the wonderful angles and thought why not create Ahuramazdan now.
But you ask an Iranian:
"Baraye Iran chi chi mohemtar ast?" (What is the most important for Iran?)
The answer is not the word "Gozineshi". No one ever think of Ahuramazda or The Zend-Avesta. They will be thinking of great European philosophers who wrote about democracy. They think that it all started there.
Again it is like many concepts that began in Iran and have never been given credit. Tell a Greek that Iranians wrote about gozineshi well before any Greek, and he will go mad.
So an Ahuramazdan will have the task of constantly having to rewrite the existing history of the world to include the Iranian version. But speaking in terms of Ahuramazdan history one can mention concepts that were at the root of all the people who lived in the Iranian Plateau. A lot of these concepts are much older than Iran itself.
In terms of space and time, there are parts of The Zend-Avesta that deal to places and times outside the planet Earth.