An Untenable Position if Ever there Was One

I call myself an atheist.

That's because I don't believe in there being a single (or multiple) deity(ies) which have a controlling influence over the universe (or universes).

I used to call myself a militant agnostic for years but sadly hardly anyone got that gag.

Now do I believe there are multiple universes? Not sure according to string theory arguably yes. In my view? Likely - but as I'm unlikely to ever visit or be influenced by them it's a moot point.

Now having said I'm an atheist and don't believe in a deity (or multiples thereof). The God(s) people worship in religion must exist for those people; for God(s) only need faith to exist for those believers. But to me that's between them and their God(s). Again I don't believe in said deity have no faith in one therefore I'm an atheist and those Gods don't exist - for me.

I see you have the serenity prayer in your album. My favourite prayer being the adopted prayer of Alcoholics Anonymous. A prayer I've used privately many thousands of times and publicly regularly recite at meetings.

Hang on you shout, that says God? Yes but my interpretation of an inner resource isn't God Consciousness but simply the power of combined human endeavour and the connection through shared matter and power (atoms and their bonds) I have with everything in the universe.

Finally soul and life after death. I dont believe in them. When I die I'm gone, finished etc. I won't face the deity I don't believe in because I don't believe in it.

So I'm happy people calling themselves atheist, agnostic or believing in a deity (or deities) of thier choice. All are valid, all are true, all are right.

“You believe in a book that has talking animals, wizards, witches, demons, sticks turning into snakes, burning bushes, food falling from the sky, people walking on water, and all sorts of magical, absurd and primitive stories, and you say that we are the ones that need help?”
― Mark Twain

Just because you, as a human being, can't fully perceive every aspect of the physical world around us is NO reason to believe there is any mystical/religious/magical basis to any part of existence. That's merely you being unable to accept reality without having a crutch to try and explain it to yourself.

If you believe there is god or you believe there is no god, you are on the same boat. You are believing something that you don't know.

I believe this, you believe that, doesn't make any difference. Everybody can believe whatever you want. It need not to have anything to do with reality as such.

OK. But I don't think it's unreasonable in any way to only perceive through our five senses. As long as scientific truths are included. It makes absolute sense. You're working from an assumption that there's something "more." Why? We're just animals that, through mutations, have developed a sense of cognition over millions of years. That's a physical function in our brains. It just doesn't strike me as something that has to equate to the supernatural.

Agnosticism is an illusion. An empty tittle,created by a misconception of Atheism. You fail to see the hypocrisy in it.
Atheist, while extremely skeptical about the existence of god or gods is not inflexible as you seen to think. Most of us employ critical thinking to the point. I do not believe that a deity does, or could exist in any context, as described. Creator, or universal spiritual being. What have you. However, there is no reason to think, that given new evidence and information, my view would not change. It’s not a question of being open to the possibility. It’s the fact that there isn’t evidence to support the conclusions.
Agnostic or Atheist, you have to accept what you have. What might be, isn’t necessarily what is. All you’re doing is implying that agnostics have a better capacity of faith, compared to Atheist. It called hedging your bets.

I don't know what to call myself. I do not believe in a man-like God that sits on a throne in heaven, but I also do believe in some form of supreme power.

I've already seen multiple false assumptions of what atheism is, so maybe your view of atheism is untenable rather than atheism itself.