"Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important."

[Rogerioandrade]

Peh said:

Rogerioandrade said:

Because both are based on assumptions about  things whose existence will always be  unconclusive: spiritual beings.

Atheism is not about an assumption on a specific question. And atheist can believe in spiritual beings like angels, ghost and other stuff. They just don't believe in Deities. 

In this sense, then,  atheism is also a religion. Thanks for clarifying . : )