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

[BrianSoddingBoru4]

Still no statement from OP what a useful definition of non-physical entities.

A guess?  An entity that is fervently asserted to exist because it serves the asserter's private desires or goals, while clearly known to be impossible to demonstrate to exist.

Alternatively: Something that someone REALLY wants to be true - wants it so badly that they're willing to accept, 'Well, you can't disprove it, so it must be real' as proof positive.

Boru