As for the way you describe yourself as being agnostic. the acknowledgment that their could be a diety is actually the norm among atheist. What atheist are saying that there isn't a god, agnostic would actually say is there may or may not be a god. What you are saying that you don't believe in god is what is defining you.
Don't let the christians define you. Let yourself and the people you like associate with define you.
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