Diana's always been unusual for leaving the island, although if JL/JLU are any indication her and BATMAN are made for each other.
Philip Jose Farmer, who was a serious comic books nerd as well as a brilliant sci-fi writer, was working on something he called "The Wold Newton Universe", an attempt to rationalise and combine
every single comics continuity in English-speaking literature, at the time of his death.
He suggested that, whilst the Amazons may have been culturally lesbians (this wouldn't have been a serious issue in a Hellenic culture that didn't have the Judeo-Christian rejection of homosexuality), they regularly raided neighbouring countries or conveniently nearby fishing grounds to obtain... er... 'breeding stock'. These were invariably liquidated after completing their task because, again culturally, Amazons traditionally view men in general as inherently inferior; few are considered 'worthy' in their eyes and those are most notable beings indeed.
Based on this, Diana's willingness to develop a lasting and two-way relationship with a Man was considered shocking to say the least. The fact that her younger sister, Donna, actually
married was a major scandal, although Hyppolyta recognised the marriage and even let Donna wear the variant on their people's traditional bracelets that indicated that she had 'willingly enslaved' herself to a man and therefore did not need rescuing.
I also note that, in all versions of the comics canon of which I am aware, Diana and her younger sister are not human but golems - magically-vivified statues. This has the interesting consequence that any ship including Wonder Woman instantly becomes a robot-ship. Despite being arguably an AI, she is one of her world's greatest heroes and held in equal esteem to her fully-biological colleagues. I wonder if Diana is one of Momo's personal heroines?