Not sure I understand you. Are you saying that absence of belief constitutes a belief by itself. I don’t think you can lump all people without belief into one group whether you call them atheists or anything else and treat them as one homogeneous entity. Its a bit like saying all non Christians form one single group and have the same belief system.
Athiests are not agnostics. Politically motivate athiets who use the courts to wrestle their beliefs upon society have at their core belief that god does not exist. They are not saying they don't belive in god. They are saying there is no god. The argument for the basis for their belief is no stronger than any argument that supernatural beings exist. It's simply belief.
I did not mean to say that the absence of a belief system (if such a thing exists among adults) is itself a belief system. That is most often referred to as agnosticism.
I was trying, however clumsily, to say that a belief system doesn't require there to be a God.
There are some in which there is a God, some belief systems in which there are many gods, some belief systems based on perceived universal principles, and even some which are defined as merely a mirror image of (antithetical to) another belief system.
What they are have in common is that they are belief systems. And as such, no single belief system (like the atheism of the LEFT) can wage war on another (like Judao/Christianity) while claiming exemption for itself because it is "not a religion."
For example, I have family members who are hardcore atheists (of the anti-God sort) who believe it is quite acceptable for them to push the moral relativism (gay lifestyle/marriage, Federally funded abortion, etc) of their belief system on society in every possible forum but seek to drive any discussion of Judaism or Christianity out of the public discourse as "ancient superstition".
When anyone mentions that Judeo/Christian principles are as valid as theirs, they scream that Judeo/Christian values are the result of a "religion" and as such must be exiled to Saturday or Sunday, while theirs are "humanistic" and as such represent only the principle of good will toward one's fellow man...and should be permitted to permeate every facet of our daily lives.