I am a full “atheist” who rejects the existence of god even as a universal spirit!

Although the literal definition of “atheist” is “a person who believes that god does not exist,” according to the Merriam-Webster dictionary, 14% of those who call themselves atheists also say they believe in God or a universal spirit.

http://www.pewresearch.org/fact-tank/2013/10/23/5-facts-about-atheists/

I 100% reject all supernatural (including all and any gods).

The why is easy there’s no evidence in are obviously naturalistic world for magical superstitions like supernatural.

Just as there is no amount of evidence of the supernatural which can be found or proved in nature this is not surprising because as science has shown it’s all natural explanations for everything, not just once, but every time, not just one place but in every place, and every way.

So after all this time, all of the world shows us is that there is only justifications for natural only explanations in nature, and that would seem compelling enough but even more there have not even been any credible thing to indicated that anything supernatural exists, thus it is extremely safe to say nothing supernatural does not exist.

Therefore, I have 100% psychological certainly. But as always I am open to reliable valid evidence, so then and only then if credible evidence is confirmed for something supernatural exists, will I alter my thinking.

To be clear, like knowledge, certainty is an epistemic property of beliefs. (In a derivative way, certainty is also an epistemic property of subjects.)

Although some philosophers have thought that there is no difference between knowledge and certainty, it has become increasingly common to distinguish them.

On this conception, then, certainty is either the highest form of knowledge or is the only epistemic property superior to knowledge.

As with knowledge, it is difficult to provide an uncontentious analysis of certainty. There are several reasons for this. One is that there are different kinds of certainty, which are easy to conflate.

Another is that the full value of certainty is surprisingly hard to capture. A third reason is that there are two dimensions to certainty: a belief can be certain at a moment or over some greater length of time.

There are various kinds of certainty. A belief is psychologically certain when the subject who has it is supremely convinced of its truth.

Certainty in this sense is similar to incorrigibility, which is the property a belief has of being such that the subject is incapable of giving it up.

But psychological certainty is not the same thing as incorrigibility.

A belief can be certain in this sense without being incorrigible; this may happen, for example, when the subject receives a very compelling bit of counterevidence to the (previously) certain belief and gives it up for that reason.

http://plato.stanford.edu/entries/certainty/