I am interested in what are the worst arguments readers have seen from Catholics affirming Catholicism. Not professional apologists, some of the worst ones are used by amateurs like me, who reason with their uninformed gut feelings.
Here are some nominations:
“30,000 Protestant denominations”. This argument has been used 30,000 times on CAF. I don’t say it is invalid. I say it is unpersuasive. I can’t imagine some dedicated Methodist or whatever reading that, and saying “30,000 now? My gosh, I thought it was only like 10,000. But on the basis of this new data, I must reconsider unified Rome’s claims”. Yup.
“Luther taught the North Pole was in the South” (or that he made some other outrageous error, or did some deceitful act, to show weakness of character, paranoia, regret starting the Reformation, etc, etc.)
The Lutherans on CAF, for instance, know Luther better than I know my wife. JonNC knows Luther’s horse better than I know her; the word “her” referring back to the word “horse”, not “wife”. No Lutheran, not one in 500 years, has been influenced towards Rome by such arguments.
What are the least persuasive arguments you have heard?