Get in agreement with yourself.

Either:

A) Paedophilic stimuli lead to paedophilic orientation
in which case:
a) Teleiophile heterosexual stimuli lead to teleiophile heterosexual orientation
in which case:
1) To avoid paedogenesis, give children "Hot Grandma" mags.
Which you just said you don't endorse.

Or:

B) All stimuli at a certain age lead to paedophilic orientation
to which you have just added:
b) Only at a certain age do all stimuli lead to paedophilic orientation
in which case you have disproven your previous assertion that:
C) if you masturbate to pedophillic stimuli for long enough then you will turn into a pedophile

So, which is it???

They cannot be simultaneously true, and either will anyway disprove your own assertions...

You really cannot have your cake and eat it too...