If you want to split hairs and go absurdly nutso, you can say that it was Eve's fault for listening to the serpent and therefore, we should go Muslim and treat women as lower life forms!
What I was trying to say, but obviously not pure enough for the likes of you, is that Jesus was sent to Earth to die for our sins, to gain forgiveness and eternal life for all who accept him.
The saga of the early Christian Church and their use of the Jewish people as the fall-guy and whipping boy "for killing Jesus Christ" is something that should never have happened and is overdue to end.
The distinction between “the cause” and “the reason” seems to elude you.