An important distinction to make between spiritualists who believe in spirits or a life force and atheists who believe that everything proceeded from the natural or material world is that spiritualists who believe in spirits or a life force must believe that the spirits or life force existed before the material world. Otherwise, they wouldn't be spiritualists they would be materialists because the spirits or life force would be a product of the material world.
So, in your opinion, all life force is eternal?
I'd ask you where and when your life force originated but based on your previous answers I'd get an IDK.
Yes, logic requires it. It's the only solution to the first cause conundrum; something which is eternal and unchanging. Which means it cannot be corporeal. It must be no thing. Like consciousness.
This is an example of a basis for a belief.