I am an atheist because I don't have god in my life. I live without god. It's not a non-belief in god. It's simply that I don't believe in this thing that someone claim exist any more than I believe that we are living in the matrix or that advanced aliens created us.You accuse me of spouting nonsense, yet you actually make two contradictory claims:
1) "It's not a non-belief in god."
2) "It's simply that I don't believe in this thing" (thing referring to "god")
Statement #2 is clearly an admission that you hold a non-belief in god.
I think part of the problem here is that you do have a belief in God. You believe "God" to refer to some specific thing, and it is that thing that you choose not to believe in. Whatever that is, I don't know, but if you assume that the word "God" has a clear and singular definition, well, then you don't know very much about religion, do you? :-)
But that doesn't seem to be the case, it just sounds like you might be a little confused, as in your last sentence, you demonstrate an understanding that there are in fact multiple definitions for the word "god".
So, what is atheism then, really? Wikipedia gives the following definition:
Atheism, in a broad sense, is the rejection of belief in the existence of
deities.[1] In a narrower sense, atheism is specifically the position that there
are no deities.[2] Most inclusively, atheism is simply the absence of belief that
any deities exist.[3]
We must then investigate further, because this definition begs the question of what is meant by the word "deity". A click and we get this definition:
A deity[1] is a postulated preternatural or supernatural immortal being, who may
be thought of as holy, divine, or sacred, held in high regard, and respected by
believers, often religiously referred to as a god.
Here I think the relevant word is not "immortal", for there may in fact be something that is immortal (the universe is immortal), but rather "preternatural" and "supernatural".
And that is were the crux is. For the mystics do not believe that God is supernatural or "preternatural". This is not the notion of God as understood in Hinduism or Buddhism, for example. In those religions, God is natural. God is nature.
So, if you identify as an atheist, and by that you mean you disbelieve in a God that is outside of nature, then I think that is just fine (and fairly unremarkable), but if you disbelieve also in the second type of God, the one who is one with nature, then that is another thing entirely. You may in fact believe in God, but you just might not have known about the various meanings of that word.