The issue here is your religious belief that an invisible god might
exist (theist) and the absence of theism (atheist), or the outright
denial and repudiation of theism, on principle (agnostic).

Here is the whole situation in a nutshell:

Theism is characterized by an irrational religious belief that a
magic invisible god might exist, though there is no such thing in
evidence.

Think about that the next time you are about to say a prayer.