And that's the other thing, isn't it?
If these children's emotional, mental and psychological development has been forever arrested along with their physical development, you've got a bunch of little kids walking around in the chronological body of adults.
Never mentally comprehending what has been denied to them. Never maturing enough to care.
I might be more convinced about what constitutes a 'happy' physical transitional, 20 years down the line, when they are all leading fulfilled, independent lives enjoying normal relationships.
At the moment, most of the ones I see, are either still living at home, or appear to be locked in a perpetual adolescence.