Which Religion Do i belong to if any?

[Mous]

Religion = Belief of some form of theism
Atheism = anti-theism

For a set of beliefs to actually be considered a "religion" there must be a belief of theism. Atheism does not have a belief of ANY form of theism.

Ask most atheists, ones that aren't dead set on spreading their belief, they don't consider themselves as a religious cult.

That's not consistent, at all.

Another definition is:
A collection of practices, based on beliefs and teachings that are highly valued or sacred; Any practice that someone or some group is seriously devoted to; Any ongoing practice one engages in, in order to shape their character or improve traits of their personality;

Atheism is a religion, semantics says so.

Also, Chrisitans/Catholics don't consider themselves cults either, what's your point?