In most depictions of Jesus he is wearing spiked crown. If this is true what was the point if he was getting nailed to a cross anyway? Or was it just vindictavness ?

"Are you the king of the Jews?"

"That is what you call me."

"OK boys, the 'king' needs a crown!"

Henchmen snickering, making a crown of thorns. Not really that complicated.

Not an expert but maybe it helps you to know that Romans had all kinds of floral crowns, e.g. Caesar's laurel crown. It's a story for the citizens of the Roman empire so that could be a context to interpret it.

This should be asked in a religious group as it is a book written by a human and the only thing historical is the book it self and actions caused by the interpretations of said book.

Unless you're talking about the act of putting thorns on people who were crucified.

It is a book of fiction as are all books that deal with the super natural

Exactly what I am asking about the thorns on who were crucified. Jesus just seems the all around figure.
- Jesus is still a work of fiction. You were specifically asking about a work of fiction.
  Could habe easily used Jesus as an example but ya went much further.
  Leave religion to the idiots that believe in it. This isn't the place

The Romans (at that point) weren’t concerned about suppressing Christianity as a religion, but with using the execution to deter potential independence movements. So they gave him the crown of thorns to indicate to Jewish separatists that their political aspirations would be self-defeating.

vindictive

he wasn't really saying he was king of the Jews, he was basically saying I Am.. And only God or the Messiah is able to make such a claim. This is why the Jewish leaders didn't try to stop the Romans from executing him for the crimes of basically saying that religion is wrong.