Ooohh! I can imagine a subculture, perhaps originally composed of infolife, that treats developmental biopsychologies as drugs! The neotenic description already says that their capacity for wonder is heightened, but maybe those looking for a different high would gofor the EterniPube[sup]TM[/aup] series, with its brain almost fully developed . . . except for the consequence-considering frontal lobe and its rush of overpowering hormones. In the world of psychosurgery, adolescent awkwardness becomes a saleable novelty. Not to mention the various persona memes that are tied to teenagerhood. James Dean, surfer/skater slacker cultures, and Frankie Avalon, frex. Or would transhumanity lose the High School Cult of EuroAustraloAmerican culture (and others, but I'm a white Bay Arean genderqueer, so I'ma stay in my lane for now)? Would shifts in global economic, political,and societal dominance shift that? What cultures,memes,and societies would prize teenager morphs? Or geriatric morphs, for that matter?

I personally say that a Neotenic can look anywhere from 9-13, and an otherwise adult morph can look anywhere from a well-developed 16+. I can see a market for morphs that exist in the space between, say, 14-16.

So, there aren´t many children around to count, but if you conceive a child, it already means the parents have biomorphs capable of reproduction. The child is born in a body that is essentially an outcome of genetic traits of its biological parents. I guess this means a lot of headache when it comes to dominant traits - between different biomorph types. The result will be complete, but may have an unusual combination for a morph. The baby will not have a cortical stack as that needs implantation and i guess it doesn´t make sense to do that until a later age (5-7 years maybe). Growing up in a society where mommy and daddy eventually change bodies is difficult, but manageable. Your parents will be there forever, which adds to a feeling of safety. But to come back to "teenagers"... Biomorphs are grown to adult size, you can decant them earlier if your specs require the morph to be younger. Some people may enjoy the rush of hormones. Should be no problem, even if its viewed as quirky. Generally, a child growing up may need to stay in its birth morph for as long as possible - to learn movement, go through puberty, aquire social skills, etc. Parents will probably have long and difficult discussions about that family holiday on titan..."It's so far away and Peter would need to change his morph, maybe we should delay that till he is older..." So, in general, everything can be produced to spec - but it has nothing to do with children at all, they have their own problems.