Is atheism a concept or lifestyle choice that attempts to exclude God from daily life?
There is atheism and anti-theism
One way of looking at atheism is first looking at theism (recognised/defined as early as begin 17th century)
theism being the conviction/belief:
"I belief there is something...... which includes a god or gods...... but I don't know exactly how and what"
It moved up over time into: "I belief there is something...... but I don't know exactly how and what"
I think that there is currently a huge amount of people being a kind of theist, without defining themselves in such philosophical words,
especially when raised in classic religious families and/or cultures, as so many in the secularising western world.
From there atheism is in first line:
"there is nothing........ no god or gods"
This was also the original meaning of the word/belief of anti-theism.
But anti-theism was highjacked by certain people to polarise it into:
"nothing good for the individual person or the society is coming from any religion"
And I get the impression that atheism is currently also kind of being highjacked into the direction of anti-theism.
In a fully independant/neutral position is agnosticism dating back to Pythagoras and revived by Huxley:
"Human reason is not able to tell me anything on a god or the spiritual/supernatural...... not proof it, not disproof it"
I think that the other huge amount of people not having a religion are agnostici (without knowing or using that word):
Kind of indifferent to it and when the facts show up, or they experience something special, they will take position.
In this view you end with the bulk of the people being religious, theist or agnosticists with some splinters