It is among the most basic of animal-human natures, it holds both sex and power combined. It is a very powerful drive.
To deny its potency is to subject more generations of youth to such predations, harms and perditions.
Yes, as humans, enfused with G-dly souls, we are capable of surmounting such traps arising out of our basic nature. But in these cases -- coach-to-youth, because of the intrinsic animal-like nature of athletics (it's not the chess team for gosh sakes) -- the traps require strongly enforced particular rules of proper behavior, with a constant vigilance.