Again, that is a choice. A child is far more vulnerable and less likely to say no when faced with intimidation and confusing psychological attacks by the perp.Let me pose another question:
Do people choose to be pedophiles? Or is it just how they are "wired"?
Of all the ones that I've known while working at a Sexual Abuse Treatment Center dealing with sex offenders in group (and individual) therapy, it has been a choice to sexualize a child because of convenience, ease, opportunity and essentially talking themselves into it. It becomes exciting because of the extreme taboo associated with it and it makes their lives more "interesting" so they go into a repetitive cycle of low self-esteem, acting out, rationalizing, justifying, minimizing, denial and acting out and then guilt, remorse and abstience, then boredom and right back into low self esteem and it cycles all over again... time and again they CHOOSE to stay into that cycle instead of making the choices of breaking OUT of that cycle.
But that is applicable to sex offenders. Almost all of these guys were married or been married or in hetro/gay relationships prior to their offenses... they all sought something to enhance their "immediate gratification/satisfaction needs" when their partners didn't provide it for them... opportunity arose in a child that they found attractive and twisted that attraction into something sexual because they were being selfish at the time.