I think I experience a sense of arrested development in some aspects - which I kinda attribute to wanting to make up for lost time. In teens and early adulthood social confusion, and other traits, led to missing out on alot of things. These days I have renewed interest in younger day things such as current musical trends, working on my CD collection, and attending rock concerts - stuff I hadn't done for almost 20 years. I even tried travel to other continents, but it doesn't really interest me -all strange places are the same. Some type of mid-life crisis may also be at play here, but I think it's more about acting my mental age (around 18 I think), instead of chronological (41), and trying not to grow old too fast, which can happen when you spend to much time alone and never go out. By this I don't mean acting immature, but trying to exist in a comfort zone.
A related question, do you think that AS people tend to view younger people as children because they don't notice what's behind the physical appearance as easily? I've caught myself at this, and have to remind myself that they are adults too even if 10 or 20 years younger, and try and treat them accordingly. The only difference is naivite/lack of experience but still they are fully rational and don't think of themselves as children.