I thought that I would come here to see if there were any Catholics who would want to enter into a discussion started by a comment of a friend of mine on a Protestant’s blog. I think that the discussion began with the abuse scandal but has moved mainly on towards infallibility:
The main issue is that the Protestants involved think that personal sin on the part of a pope proves that the pope can’t be infallible (not due to a confusion between impeccability and infallibility but based mainly on statements like “I don’t see how a sinful person could claim to be infallible” and Bible quotations about knowing a person by his fruits).
Someone also briefly tried to prove celibacy wrong with the “husband of one wife” argument.
I’d jump in, but I don’t have time at the moment.