There are many bases for it, mostly personal, based on firsthand observation of people who have, for whatever their bases, such predilictions. And note that I used the example of an eight year-old child. I am not talking about age of consent in general, or using the OP’s original “14 years old” as an example. In China, where I have residence and lived, the age of consent is 14, and I actually can conceive of instances, at least in the much poorer western regions, where it makes perfect sense and is not at issue for me; not prostitution, but actual young families forming and getting an early start on survival.
I have had extensive conversations with a sexual predator - a convicted pedophile of small, pre-pubescent children. He had served time for what he does not, to this day, feel was wrong - including sexual intercourse with a ten year-old child. The man, in his early forties, felt comfortable enough talking with me to actually state his case, and present his bases for why there was nothing inherently wrong with what he did. And I listened, for a long time, probing and questioning as neutrally as possible, challenging but not attacking any of his assertions.
“It’s very beautiful…not damaging, the only damage done is the stigma placed on them afterward by others, not me…they have rights too…I care deeply about them…who is in a position to define love…what about their rights…who is to say they cannot be attracted to me as well…I never did anything without their consent…they are human beings too…there was a quid pro quo to all of it…age is arbitrary…I’m being persecuted for who I am…” - right down to, “Yes, I would marry any one of them (boys and girls involved) and take care of them for the rest of their lives if that is what they wanted and it was allowed”.
While listening to him, I could project his reasoning into other scenarios, like the pre-civil war era, where open interracial relationships were prohibited. That is not a strict parallel with the issue of consent, but rather relationships that are prohibited in general by societal mores. I imagined him talking about anything otherwise taboo in another place and time, and simply substitute age for color, and could hear that he was at least sincere, expressing earnest sentiments that could apply to any number of relationships that are now commonly accepted. To him it was like someone saying to any average person in a courtship situation, “You just want to date or get married for sexual gratification. You’re taking her on dates and buying her flowers and necklaces just so that you can lure her into your lair.” To him, the fact that you could reduce any intimate relationship to such terms opened the question of who was to arbitrarily decide what was appropriate in his particular case, simply because it didn’t match theirs, or align with the norm.
At the most fundamental level, the man I talked to wanted freedom of influence over children, whose freedoms to be influenced, he feels, are being impinged on. In his mind there is a challenge to who, in a society, has rights over children - and, not unlike many ideologues who would not argue in favor of pedophilia, the rightful influencer of children are not necessarily, even by default, the parents or other “legitimate” (and I use that term VERY loosely) guardians. Part of my basis for opposition is essentially the other side of that same coin. He has arbitrarily left the “freedom to influence” (any child) door open to himself. I have no problem closing that door just as arbitrarily to most.
On a side, but quite related, note, the dialogue with the man I talked with brings to mind a consistency with the Jaycee Dugard case, where Phillip Garrido wrote a letter to a judge claiming that Jaycee’s civil rights, especially her right to free speech, were being violated. Such a caring soul, what a champion of civil liberties. Phillip Garrido’s attitude, in interviews I have heard and watched, mirrors, in many ways, the pedophile that I know and have talked with at length. Said Garrido in an interview, “And you’re going to find the most powerful story coming from the witness, the victim – you wait. If you take this a step at a time, you’re going to fall over backwards and in the end, you’re going to find the most powerful heart-warming story.”
Take away the kidnapping, imprisonment and forcible rape elements, and he might as well have been the man I talked to, who was making his case for sexual intercourse (among other things, which he vehemently claims “isn’t all of it…isn’t the whole story, or the entire relationship”). In his mind, it was all something very beautiful, very sacred, along with a plethora of other sentiments, that he felt just weren’t understood by a society whose norms and mores are both arbitrary and discriminatory. In his mind, and to his way of thinking, he had the misfortune of living in a time where we had not yet ‘evolved’ to acceptance of what he thought would one day be the future norm (i.e., a forty year-old man can openly court an eight year-old child).
As I said before, I don’t have all the answers, but I really also don’t have a problem with standing in firm opposition to his - as long as we are all, including him, flying by the seats of our moral pants.
Does that help?