I totally get what you are saying. When I was an atheist, I would look at all the sinning Christians and think: "Hypocrites." I figured if someone really believed in God, then they would not sin. Seems perfectly logical. And since everyone sinned, well.... Unfortunately, it doesn't work that way. Even true believers succumb to temptation.
But, don't make the mistake of assuming the choice to sexually assault a child is like a normal temptation. I mean, it has to be different, doesn't it? I have to think that people who harm children are not wired like you (I presume) and I are wired. How can you be sexually aroused when you are coercing someone? Men who can maintain an erection in the middle of an attack have a serious mental problem. That is not normal. Those people are psychopaths in the clinical sense, not the pejorative sense. And, psychopaths are attracted to jobs/positions of power/authority over others, because they enjoy manipulating people...and the Church has positions which are given too much credit by followers. I get that people's faith are shaken when they see a psychopath in priestly garments...but I guess I don't give so much deference to other men, even priests, that I am shaken by that.
Psychopaths are attracted to positions of authority...I understand and accept that non-religious fact of life.
Aside: That is why the more secular authority the Church had (in centuries past), the more power-abusers sought out positions in the Church. The less secular power the Church has, the better. We have improved things by separating church and state, but some types of power-abusers still seek out Church positions so they can play with people.
Our newly assigned priest introduced himself a few months ago: "There are two things you should know about me, he said. "First, I'm a sinner. [Full stop--silence.] Second, God loves me. And, I'm spending my life trying to figure out why, and I hope you will pray for me and help me." Priests are just humans. We need to be diligent around all humans.
Having said all that, yes, this is a mess.