The best thing we ever did was separate from Rome, if that's what we indeed did. There were more Christian churches than that of Rome back in the early days. Rome was NOT the only one. There are protestant churches who are heretical, just as there are Catholic heretics, but there are many, many more that follow the teachings of Christ and who are filled with the Holy Spirit. I'll take a Holy Spirit filled congregation over any other any day.
The early church was the Catholic Church. The Catholic Church is the only church that traces its beginnings back to the Apostles, back to Christ. Protestantism can only be traced back to the Reformation. It was a heretical movement begun by men, not the true church founded by Christ.
Some of these modern-day mainline Protestant churches are, in fact, filled with some kind of spirit, but they are neither filled with nor guided by the Holy Spirit.