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

[abaris]

Otherwise differences are ignored because the atheists, who hold opinions contrary to one another, will only debate against theists.

Well, to this I can only say, you obviously haven't read any of my posts. From the top of my head I would say I'm challenging atheists more often than theists, since most theists making it here aren't worth debating at all.

It's only that I usually don't look at the gazillionst thread on theists answer me this or that and so I'm missing out on most of the religious discussions. The only thing interesting me is when religion plays into social or political life. Otherwise I'm with the Prussian King Frederick of old: chacun a son gout.