Well there's a whole slew of evidence and testimony from the early church fathers, the ancient Christians in the centuries leading up to the 1500s, the Reformers and the Puritans -- not to mention the history, magisterial teachings, and decrees of the RCC itself -- that proves otherwise. Have you ever read the Papal decrees ad abolendum or ad extirpanda? Look them up and read them once. Then read Revelation 13 and the chapters that follow.
The early church fathers testified (before its fulfillment) that the pagan Roman empire in their day was the restrainer, and that only upon its FALL, would the man of sin arise. Guess what happened after pagan Rome fell?
Are you aware of the origins of Futurism and Preterism? They're both counter-schemes of interpreting the book of Revelation by which the prophecies are deflected away from the Pope of Rome. Preterism says pagan Rome. Futurism says future Rome. None but historicism say PAPAL Rome.
For what purpose? They had been living under the villainous pagan Roman Empire long before Revelation was even written, so John wouldn't have been telling them anything new. Plus, the man of sin, aka beast from the sea, was to arise from WITHIN the professing Church, not from without. Your villain wouldn't fool anyone arising from out of the pagan Roman empire. Entering the sheepfold unawares, as the head of professing christendom, now that sounds more "villainous." Guess what Vicar of Christ means?
Those are pretty much the only two choices there are. Futurists and Historicists believe it was written under Domitian in the mid 90s. Preterists believe it was written under Nero in the 60s.