12 year olds don’t get hurt because of how pedophiles feel, they get hurt because of how pedophiles behave. So, feelings are never wrong. Only behaviors are wrong.
I am so glad that you wrote this. There is such a taboo in our (Australian) society about admitting to arousal from all manner of stimuli, even when not acted upon. I believe that this misdirection of concern and misunderstanding stand in the way of dealing effectively with people who sexually abuse minors. For one, it stops (especially) men who feel aroused by minors from seeking effective help, if they need it, to have them not translate the arousal into action.