I don't know if there is a genuine difference between someone being physically incapable or having no desire to engage in it--- if a man has absolutely zero desire, one can only assume four things: Either he never physically matured, or, illness & injury done so, or, hormone levels were practically non-existent, or,  something neurologically "off" that couldn't trigger such desires even if he was physically normal.

The latter would be extremely rare, because even neurologically impaired individuals have desires, etc--- besides Barrie oftentimes noted that it wasn't for a lack of trying on his part, and lamented not being able to love like other men, as well as his penchant for falling madly in love with beautiful women, so clearly he had desire. He just couldn't do the deed.

As for his height, I think there's some speculation as to that. Some biographers say that he was roughly 4'10", although he says 5'3.5" on his passport. I know Chesterton himself was 6'3"-6'4" and absolutely dwarfs Barrie in that shot from their cowboy movie. Regardless, psychosocial dwarfism doesn't necessarily mean one will be a dwarf (4'10" & under) but rather their growth and development is stunted, as most victims end up on the short side of normal.

I'm reminded of what's known as "daddy long legs syndrome" in the case of gigantism, where the body is so focused on growing that everything else has been compromised, especially the sexual organs, where they are not just impotent but sterile. Bernard Coyne & Julius Koch, one of the few known men over 8'0" tall, were unfortunates of this malady. I believe the correct technical term is eunuchoidal-infantile. Of course, that isn't the case here. Although it is noted that in hereditary pituitary dwarfism that impotence occurs, as some of these individuals never physically mature.

Maybe Barrie had extremely low testosterone and high estrogen levels, and that might be the cause of his impotence and possible sterility. If he existed today, it's probable simple monthly shots of testosterone would have basically cured him.

Then there's either illness and injury. It's possible that sometime in his childhood he was damaged and never could have sex period. But that appears to be an unknown as nobody is forthcoming & Barrie himself apparently never denoted the hypothetical cause of his condition. As for the mumps, historically, it could cause both impotence & sterility though it was rare. I imagine a lower class family in Scotland in the Victorian era probably wouldn't have been able to get the best care, etc--- and who knows maybe he had a very bad case (if he ever had it anyways).

As for scarlet fever, the way I understand it is this, any long-term fever of any kind can permanently effect the sexual organs of men or women. Maybe that could have been the case for Barrie, as a child or sometime as an early teenager. A high grade fever that lasted too long can cause irreversible harm.

Thanks for the reply. I'm reminded of someone like Twain, who so many secularists claim as their own. A man who questioned & doubted & critiqued, but regardless had strong ties to the Christian denomination he grew up with until the day he died. It's not for anyone to say whether someone is saved or lost, because only they & Jesus Christ Almighty God knows where they stood. Barrie strikes me as a man who probably shrugged off the totalitarian aspects of religion, all the while pursuing answers to unsettled questions in his heart & mind.

I read somewhere that he liked Nietzsche, and it makes me wonder on some level whether G.K. Chesterton didn't write numerous essays about the irrationality of nihilism & Nietzsche himself, because of his friend Barrie's interest in the man.

I read an article sometime ago on the STAND TO REASON website entitled, "Sympathy For Hook," and it was a rather Christian perspective on Peter Pan, and whether consciously or unconsciously Barrie basically created something of a conversion story, much like Ebenezer Scrooge's own; that Hook had to die, in order for Mr. Darling to be the father he always should have been. That it's no coincidence in the play's history that the actor who portrays Darling is also the same actor who portrays Hook. The old man must die in order to be born again, is clearly a Christian theme, whether Barrie intended it to be that or not.

Again, many thanks for the reply!
Jesus bless you and your family