I believe deity is like clay. Without an individual person's vision of what that clay is supposed to look like and how it is supposed to behave, it is just a mass of potential. We can imbue that clay with a face and a name and a personality, but when not formed, it reverts back into an amorphous state. My lump of clay is the same as your lump of clay. I still believe there is benefit in choosing a specific deity for specific needs. It's just calling forth a more focused, defined aspect of deity to fill the need.
All of the polytheistic religions I know of have an ultimate god/dess. The other deities below them are often described as their children, or are given god-like status by the ruling deity. The parent deity is a specific pantheon's lump of clay, given form. The deities below the parent deity are like a chunk of that clay given it's own specific form.
In my opinion, all religions are in a way polytheistic. In Christianity, God is the ruling deity, and Jesus is an aspect of God. There are plenty of references to that in the Bible, I believe. For the sects of Christianity that believe in patron saints, those Saints are like a specific container to help focus the worshiper's vision of God, and explain to Him their need. In another example, Buddhists have different forms or faces they put on Buddha, to express different things. Buddha is not considered a god, but is an aspect of the clay they believe in. Nirvana is their clay. Their minor deities are viewed, not as gods, but as ideas and symbols.
Even Atheists are right. They just see their lump of clay purely in scientific forms.
Often, religions say that deity is in all of us. Christians believe God is always in their heart. Pagans believe we are all gods and goddesses in our own right. These ideas seem completely opposite, but to me, it's just different ways of looking at the same thing. The spiritual clay that becomes deity is out there, available to all of us. It is in us and around us, just waiting for us to call upon it. That is how God is in our hearts. We are all gods and goddesses in our own right, because we all see deity in our own way, even when we are calling it by the same name. Gods wouldn't exist without us to envision them. We think, therefor, we are.
The only time I will ever say that someone is wrong in regards to their religion is when they say someone else's religion is wrong. Even if that is supposedly part of the teachings of their religion, I think it is a perversion. The belief that one's religion is the only true religion is a human idea formed by fear of doubt, and alpha-humans' need to conquer. I believe that the current interpretations of religious texts saying a god demands that all people believe religion in their way or no way, is a gross misunderstanding. The admonitions to share one's religion with the world are meant to spread peace. It's meant to give people who have no religion and WANT or NEED a religion answers and comfort. It's not meant to rip away a religion already in place in a person's heart, and replace it with another.
The spiritual lump of clay doesn't want us fighting in it's name. It doesn't really WANT anything, except to be what we need it to be. I think maybe it doesn't even want the anger and hate, but because it's nature is to become what we see it, it has no choice. To me, this is why, in the end, good triumphs over evil.
So, in a way, my religion is every religion. It's not Agnosticism. I definitely believe in deity. I just believe that we are all right.