And I'll admit I sin too. I don't expect anyone to be perfect. What I do expect from Christians is evidence of making progress on the spiritual path, movement in the direction of perfection. Did you not hear about Pope Francis publicly saying he'd made a mistake about events in Chile? That was the honest thing to do and the Christian thing to do. Would to God others in the Catholic Church (and in the dark corners of Protestantism too) were as honest and willing to make progress spiritually by correcting their mistakes.
What I have seen too often in the Catholic Church are priests and bishops who would never change their sinning and covering up unless the press exposed them and the government prosecuted them. They then put on an act of contrition and want to keep their positions. They're not sorry for what they did. They're sorry they got caught!
You know what? I could believe a good priest might molest one altar boy once. Then he would repent, being a good priest, and be sure never to do it again. He would also apologize to the boy and tell his parents too, saying if they wanted to prosecute, he would plead guilty. If I were a parent with a child as an altar boy, I'd believe that priest. I wouldn't press charges. I'd say, "He confessed this when he could have tried to get away with it. He's a good guy who slipped."
It's very different for people who sin again and again in the same way, never learning, never truly repenting of anything but posing as holy men.
Hebrews 10:26 For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,
27 But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries.
Such priests also defile the Holy Eucharist with their mockery and fake repentance.