It's really becoming a bizarre and distressing thing for me, too. I'm approaching mid 50s, with an internal emotional age of about 17-26 at best. I don't really relate much to people my own age, but being from a generation now 5 decades in the past, I don't really relate to anybody much younger than me, either. I feel like a teen or 20something trapped in a middle aged body, and I do everything I can to keep that aging as slowly as possible. I guess it doesn't matter much,as I have no friends and never meet anybody anyway, but it just adds to that isolated feeling of being marooned on an alien planet.
In previous generations, this probably wasn't as pronounced a problem for someone with HFA, as changes in technology and social expectations were much more gradual, but today, being a child of the 60s, 70s and 80s is almost as far removed, in terms of day-to-day technology and methods of socialization as our world was from the days of horses, buggies and the telegraph. As non-social as I am by nature, I don't see texting as a healthy or constructive method of communicating with someone you like, on a day-to-day basis. Hell, I'm only on WP because I have absolutely nothing better to do with my time.
So now, I'm not only on the Wrong Planet, I'm also trapped in the wrong time period. 