I'm on a quest to understand pedophilia. I got aware of attempts of evolutionary explanations and in the following i came across the term neoteny, which among others describes the human as a juvenile ape. Moreover it means that our brains mature at a very slow speed and we are born with immature brains.
Recently, i broke a bone and wondered why i don't have bones twice the size. First of all, i would need more muscles and therefore more nutrition. This means that everybody with thinner bones has an advantage. And they have an advantage until the bones break infrequently. Then this advantage gets neutralized by the disadvantage of breaking bones. This is how evolution works. Some get thicker bones, others get thinner ones.
Some animals are born with a mature brain, that means a fully myelinated brain. They have well developed instincts right from birth. Humans have the advantage of flexibility and free decision making. Hence less influence from instincts is an advantage. This works until a disadvantage ruins this advantage. I think that losing the heterosexual mating instinct is such a disadvantage.
So, evolution gives some human stronger instincts and others weaker instincts. And the unlucky one, who do not experience the heterosexual mating instincts, will develop a paraphilia and most likely stay childless. This is under the assumption that normal heterosexual people experience such an instinct.
Is this too crazy?