Adults make up a huge undiagnosed population. It is easier for doctors to set up shop and cater to families with children because have more "pure" signs and symptoms of AS, and not only that, have parents who will make them be seen on a regular basis. More adult AS specialists will probably emerge in the next decade, as more undiagnosed adults become aware of their condition. I grew up in a family that was totally clueless that anything could be wrong with me at all. To my mother, the fewer friends I had, the better. The less I wanted to be around other kids, the less she had to worry. People are catching up with normal child development behaviours like never before. Adults that have been uncaught, usually have more issues than just AS to deal with, especially adult females, and they can be much harder to clearly assess. Doctors are just now, starting to question the female assessment differences. as well. Hans Asperger did not believe that females could have AS, and based all of the diagnostics on males. Boys and girls are neurologically different. Girls are stronger at socialising, but as we all know now, they can have AS. Anyway, another reason for catering to kids is that because AS is relatively new to the general public for available treatment, and kids matter more to a society mostly made up of parents, they are the priority for treatment.