God

Are there any arguments for God’s existence that are not fallacious? 

Ever heard about the Cosmological Argument? It's like cracking open a can of soda, having it unexpectedly explode all over you, and then saying, "Well, someone or something must have shaken this can!" The argument reasons that because the universe exists, there must have been a cause or reason for that existence, hence God. But the problem is, who's to say God himself isn't a shaken can? Who shook him into existence? Welcome to the infinite regress, the never-ending Russian Doll scenario.

Then there's the Teleological Argument, which is basically like walking into IKEA, seeing a perfectly assembled bookshelf, and assuming there must be a divine Flatpack God. It argues the complexity and orderliness of the universe indicate design, and therefore a designer A.K.A God. But this argument tends to forget that Dolly the first cloned sheep wasn't assembled by a divine shepherd, but by science.

Moral Argument? It's akin to saying "Without a traffic cop, we'd all be crashing into each other." It posits God as the source of moral laws. But what about all the immoral acts committed in the name of those moral laws? Bit of a traffic jam there, huh?

To wrap it up, proving the existence of God can feel like trying to find a black cat in a dark room. Especially if there is no cat. Or the room doesn't exist. Or you're a dog. But as philosophers say, the absence of evidence isn't the evidence of absence. And that, my friend, is the holy grail of loopholes!