The foremost reason would be that Jesus was never impaled on a two beam cross. The Greek word translated cross is stauros, which basically means an upright pale or stake. In other Biblical references, the Greek word xylon was used (Acts 5:30, Galatians 3:13), which simply refers to a timber or tree. For public executions the Romans generally sunk a singular beam into the ground upon which the victim was impaled. The executions took place with the hands raised upward, and along with their feet were either bound or nailed. Actually, it wasn't until the 4th century before the cross came into prominence, when pagan Emperor Constantine promoted it as a symbol of Christendom. The use of a two-beam cross actually can be traced centuries prior to Christ, and had roots based in pagan worship and were of a phallic nature.
bob>The issue of the cross or pole isn't really important, as it's not a salvational issue anyway. However, the Messianic Seal, which I use for my signiture on the bottom of the post, has been found all over Israel and the eye of the fish is a cross, not an x, but a cross. The issue of this thread is that the cross is used as the universal sign of the Christian faith, it was displayed on church signs, buildings, in the halls, on the podiums and so on. Today, in many Christian churches, you can't find even one cross, in fact, it has been taken out of many churches, it's too churchy, so to speak.It's been the main symbol for centuries, but it's going away, what do you think about that?