Just like you or I may be attracted to women, they are attracted to little boys.
Just because it's morally wrong to the majority of people doesn't mean they will stop, it's not wrong in their mind.
To them, I'm sure, it's as reasonable as a man and a woman of age having sex.
Not to say I am defending them, but maybe I can assist you in understanding them a little better.
I do not agree with what they do, personally.