Thats kind of funny, as a scientist you accept this based solely upon your own experience. But how do you explain weird fetishes people have? Are people 'born' with attractions towards rubber or leather? Are people 'born' being attracted to feet or whatever strange fetish people may have? Don't people change who or what they are attracted to? Today children are being much more exposed to homosexuality and are being made to accept it as OK and normal. That wasn't true 10 or 20 years ago. Don't underestimate the power of sexuality. You might be very surprised at how people's minds are shaped through sexual experience.
Gays themselves appear anecdotally to think so, too. Only you won't get them to admit it when they're in polemical mode. Then you're just retailing the "pederasty smear".
Which happens to be true, but never mind -- you're a McCarthyite, and you're running a witch hunt.
First, knock down the polemicists. Then the adults can go talk.
But this business of gays coming around kids has got to stop. GLSEN has got to go, and so do the "gay studies" in schools that have been led by NEA liberals to accept them.