Debate Guide: Pedophilia is unnatural
"Pedophilia is sick and unnatural and WRONG!"
OK. You seem to believe that something is wrong because it is unnatural (which is not the case anyway). This is not necessarily so.
"Assuming that the average child begins puberty at fourteen years, the vast majority of preteens would be prepubescent. Sexual attraction also requires either masculine or feminine secondary sexual characteristics and therefore, a preteen child would be as sexually attractive as a broom or pot plant." (actual argument from Condraz23 on IIDB)