I am 41 years old and was diagnosed quite a few years ago, but have not really revisited this. I might be wasting my time here, but lose nothing for trying, so here goes.
I always was aware that I was somewhat different to most people, but before adulthood most people found me kind of intellectual and eccentric rather than that out and out oddball, but as an adult I found myself more and more isolated and have observed that I tend to lose friends far more quickly than I make new ones. I think pretty much that much of this is down to AS (although I AM aware of the dangers of using a diagnosis as using as a get out of jail card for all kind of personality failings), but on attending a couple of AS meetings I was struck by how different again I was to most of the people there too (many of whom were . I think the problem is that I am between two stools, and I am too different to gel completely with 'normal' people but am but to many Aspies I might appear too much of a regular guy. I have read about how Freddie Mercury and Cliff Richard used their fair skins to keep their Indian heritage quiet and build impressive showbiz careers 'passing' as white, and I have can 'pass' pretty myself as a non Autistic person - even though in my case it was unintentional. However, I have read the book 'Loving Mr Spock' and despite its trite title, a lot of it I recognised in myself eg. tendency to obsessiveness and insularity, fascination with knowing how systems work, limited emotional spectrum which impairing relationships, and seemingly a contradictory leftish political instinct coupled with a disdain for Political Correctness.
Anyway, I don't want to re-write War and Peace here as I might be whistling in the wind, but would be intrigued to hear from anyone that finds any of this recognisable to them.