I reject papal authority because the pope isn't even the pope anymore. The present guy was ordained by guys ordained by.....ordained by guys who murdered the previous guys instead of getting ordained. The ceremonial lineage has long been broken, and it can never be repaired. One thing no Catholic should argue is that people are infallible. This includes the pope. Also, I'm pretty sure the Pope is covering for Peter. I am no theologian, and I am full of technical holes. The right quote from Numbers or John could blow me wide open.