Hey, thanks for asking.
Dr. James Cantor, from Canada, performed brain scans on convicted molesters. What he found was surprising: When the areas of the brain related to sexual arousal were activated, so were the areas of the brain that are responsible for nurturing behavior and emotions. When the areas of the brain that are responsible for nurturing behavior and emotions were activated, so were the areas of the brain that are responsible for sexual arousal.
In other words, the research indicates that there is a crosswiring of the brain between nurturing and sexuality.
Are paedophiles' brains wired differently?
Granted, this was a very small sample size; and the sample size was based on offenders; and no scientific finding can be considered valid until it passes the tests of peer review, repeatability, predictability, etc. But it does suggest that attraction to children is more neurological than "learned".
Yes, the attraction is irrational. Another point on which we can agree.