[manarth]

  Not for men (for the most part, as in 99%).
  They either love vagina, and are disgusted by penis, or vice versa.

In ancient Rome, "It was considered natural and unremarkable for men to be sexually attracted to teen-aged youths of both sexes, and pederasty was condoned as long as the younger male partner was not a freeborn Roman." [1]

Most people would agree that genetically, men haven't changed all that much in the last 2000 years or so, which lets us discount the idea that a genetic bit has recently been flipped.

That leaves the notion that sexuality is - at least in part - a social construction.

[1] https://en.wikipedia.org/wiki/Sexuality_in_ancient_Rome

[tokenizer]

If little boys were raped in culture, they would likely replicate that behaviour no?

An example being pederasty of little boys in Afghanistan being common, similar to your example. Completely cultural and I would argue traumatic.