I would argue that attraction to a girl who is biologically capable of reproducing, say, anyone over the age of 13, cannot be called a perversion in the scientific sense. I'm not explaining myself very well - let's try again:

If we take as given that the human sex drive is primarily, from a biologial point of view, focussed on re-production, therefore sexual attraction is designed to be the seeking out of a suitable mate with whom to produce offspring.

If a person's overwhelming sexual desire is for someone (or something for that matter!) with whom they would not be able to produce a child, then a further explanation is required.

For example, homosexual attraction and attraction to pre-adolescent children (or babies - as that's what the question was about) cannot serve that biological imperative and therefore need explaining.

However, while arbitary age of consent laws and public opinion/predudice may regard a sexual attraction to a young adolescent "wrong", it is perfectly legitimate from a biological point of view (apparently the ideal time physically for a girl to have a baby is 14!) and therefore no firther explanation or excuse required!

As the old joke says: In a survey, 90% of straight men admitted to being sexually attracted to teenage girls - the other 10% lied!

Ofcourse, as an exclusive little-girl lover, I wouldn't fit in wither catagory, but hey - it's just a joke ;-)

Hope I've made some sort of sense and not offended anyone! :-)