AxisMundi
E Pluribus Unum!!!
.....That tells us the different religions didn't arise out of a need to address questions the others weren't answering, but for some other reason.
IMHO...
We know that the earliest belief systems were Shamanic and Animistic in nature. Man lived intimately close to nature, as part of nature, so it is natural (no pun) that we would seek answers to things within Nature herself.
As Man grew in numbers nomadic family units became clans, then tribes, villages, cities, nations.
The oldest gods are almost all animal forms. As civilizations developed and grew, growing father from nature in the process and more "humancentric", we begin to see humi-form deities, gods and goddesses with both animal and human features. At the height of civilization, and removal from nature and an all but complete immersion in our human selves, we see Deities completely human in form with all the attributes, foibles, and desires of human beings.
Religion, again IMHO, not only seeks to answer such fundamental questions as who we are and why we are here, but also offers the emotional stability of parental figures, of wise Elders, etc.
leaving out the theopolitical for the moment, of course, and the inherent power religion can being to it's clergy.