Is Christianity Fact or Fiction

I like to provoke thought that is why I am asking this question Is Christianity Fact or Fiction.
The main reason that we would say that it is fact is when we read the bible it tells of the historical side to Judaism and Christianity, when we read the new testament which teaches that Jesus Christ the son of God came and died on the cross for our sins. Is this a good enough reason to believe? We are told that Adam and Eve were confronted by Satan in the garden of Eden and they ate from the forbidden tree in the garden and therefore sin entered the world, after all we see a very fallen world around us today.
On the other hand The main reason that we would say fiction is could the bible be just a book that someone has written to get us to conform and to discipline our lives. Maybe there is no God or Jesus, no Heaven or Hell.
I would like to hear what folks have to say on the subject, I have a belief if anyone wishes to guess which belief I have feel free to say.

Eternallight · 26-30, M

The original Christianity was a powerful political tool in the face of Roman oppression.

Back then it empowered the poor and powerless and encouraged them to take power out of the Roman's hands and into their own by way of the power of social union and COMMUNITY where each helped the other Christian brother out.

Today it is a toothless tradition with its followers castrated and arguing amongst themselves about the true interpretion as they await the return of a messiah. Dream on.

What was at one time the Empire's biggest nightmare became the very tool of oppression.