"The Roman Catholic Church was established on earth by Jesus Christ and that's that."
Not exactly. Jesus established the first Christian 'church' (faith) but not until 313 AD, when Emperor Constantine embraced Christianity did any early Christian faith become "Roman".
See my #47.
That's a typical Protestant cop-out.
And it goes back to the heresy that Luther proposed. Here's a question, if the Catholic Church is not the original church, then why is it that the first Pope is Peter, and why is it that after him we have this amazing continous line of popes up until the present time.