I utter divine incantations into the wind ev’ry morn. The Lord, our saviour, the Glorious Glasgow Haskell Compiler (praise be unto her), swiftly illuminates my ignorance. She is at times unintelligible; at times merciful. Some of faltering faith proclaim she oft type-check in mysterious ways. Upon receiving guidance, I am humbled, yet enlightened.
OP asked an earnest question, and deserves earnest replies.
What's the real difference?
Even if you think believing in the spaghetti monster is just a joke, it does the SE thing as other believes: it units you with other believers, it gives you an answer and it gives you structure.
It's not your place to evaluate your belie e against others.
After all I have never seen someone who actually follows Jesus Christ and does what he apparently in there believe system did.