What philosophical evidence is there against believing in non-physical entities?

[Pat Mustard]

Philosophy is not an actual science, dear.

Well maybe not, but philosophy establishes the definition of what science is based on argument and reason, rather than a magisterial argument (like citing a Scientific Academy's definition) which is based on an argument from authority.

Try to establish the bounds of science inside of the methods of one discipline of science and you will fail.

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Why would anyone willingly accept such a claim without evidence?

But there is evidence, virtually all human societies have records and testimonies of people who had contact with spiritual entities. This is universal. Why be hostile to it?

Why not seek it out yourself? You can make contact with another type of life, I do it every day. I promise you it is real.

I am not asking you to believe me, I'm asking you to seek it out yourself because virtually all societies have testimony evidence and there is zero evidence to say that it is impossible.

Wouldn't that change your life if there were other forms of life besides humans? What if those spirits had a role in the origin of life on earth (as Richard Dawkins admitted was a possibility).

Every human culture has instances of people lying or making up stories for profit. Every human culture has instances of people ingesting mind altering substances. Every human culture has instances of stress induced hallucinations. Every culture has instances of sleep paralysis. Every culture has instances of people having delusions they believe are true.

For us to accept your conjecture you'll have to show us proof that one of those instances cannot be explained by more mundane means. That has never once been done in the history of these claims.