Possessing child porn is a crime and with good reason:
1- A child was tortured so you could fap. downloading that shit encourages the abusers to make more and others to download it too.
2- A small proportion of CP consumers turn into molesters. A small proportion of cocaine users turn into criminals that's why it's banned.
Who gives a fuck if you like boys or girls? The point is that you will NEVER meet a consenting partner under 13 and that your entire fantasy revolves around an unethical situation: rape.
Don't let the pedo communities delude you with their bullshit. Consent is the line that humanity draws. If you don't have that basic human respect of ethics: you are unhuman and monstruous, a harmful leech on society hence the violent reactions to pedos & rapists.