Nice stock answer, but you stated:
The Christianity of the New Testament (and the Christianity of the Fathers), is a very different Christianity from what arose centuries later, called Roman Catholicism
When did Catholicism begin not to be "real" Christianity in your opinion?
When did Catholicism begin not to be “real” Christianity in your opinion?
“While men slept,” Matthew 13:25. Weeds were sown among the original seed (wheat), early on. The syncretistic state church of the sixth century, headquartered at Rome, was the result.