We know that most young boys who say that they are girls grow up to be men who do not think they are women and who do not want to be women. We now have many studies in which researchers have followed such boys for fifteen or twenty years, well into adulthood. In every study, the great majority of such boys grow up to be men who have no interest in becoming women. In one of the largest such studies, of 139 boys who insisted in childhood that they were really girls trapped in the bodies of boys, only 12 percent still felt that way as adolescents or adults. In other words, 88 percent of the boys grew out of it. Many of those boys grew up to be gay men. Some grew up to be straight men. But they are mend. They don’t need hormone supplements or surgery. They are capable of fathering children.
In other words, for the majority of young boys who say they are really girls, the desire to be a girl is just a phase. For such boys, allowing the boy to present himself as a girl will be a major stumbling block on his road to becoming a man (whether a gay man or a straight man)…
The most common outcome for the five-year-old boy or eight-year-old boy who says that he is really a girl, twenty tears down the road is a boy who grows up to be a gay man… Most five-year-olds, and even most eight-year-olds, have little sense of their own sexual orientation prior to the onset of puberty. Many kids in that age group, when presented with the facts of life, just pronounce it all to be “yucky.” Heterosexual intimacy and homosexual intimacy seem equally strange, and repellent, to many prepubescent kids. So it’s very difficult for that eight-year-old boy who loves to dress up as a princess, who believes himself to be a girl, to know whether he might grow up to be a gay man and feel right as a gay man. Being a girl may seem more real and more comprehensible.
Leonard Sax – Why Gender Matters p.261