My experience is similar to Callista's. Sometimes telling people only makes it MORE confusing. Sometimes I WANT to be able to tell people more, because it explains more, but that can be good or bad. If you are really struggling with a certain social dynamic, it might help people understand the root of your behavior if you tell them about autism/AS. But then, it gives people a label to put on all of your behavior, and then, your unique personality ends up being viewed as a syndrome or a handicap or something. I consider AS FUNDAMENTAL to my quirky personality. But it really really is MY personality, not some defect on a normal brain, like if you were born blind or crippled. Of course being blind or in a wheel chair WILL affect who you are and how you define yourself, but those things in themselves don't. Like, if you are blind and so you go to a blind school and deal with blind person issues and have blind friends at school, well, your blindness has affected your expression of your self, but it does not define your personality.
Autism on the other hand, is intrinsically part of who I am, as a SPECTRUM not a disorder or syndrome. There have been aspects OF the spectrum which can be called a disorder, such as sensory overload or social blindness, but the reason I sometimes have those is the same reason I am able to analyze art or excel at language. It's not like I happen to have some disabilities and in some coincidence I got some gifts to balance them out----no, if my brain was able to filter stimuli more, I'd be better at complex social settings, and worse at learning and analyzing. I can't be both, because its not about brain power, but brain structure.
So anyway, autism is part of my identity, not something I want to hide. Just like being male, American, Christian, an adult, a friend of certain people, is part of my identity. And I don't want to hide any of those things, but unfortunately, telling people about autism can do more harm than good. It would be like if you speak a different language, in which 'male' means 'criminal' or something. If you pointed to yourself and said, 'male', well, the person now knows less about you. I want to have more close friends whom I can tell about my autism, but as it is, the people I am developing relationships cannot relate to me very well on my interests, sense of humor, or anything. They like me, they just think I'm odd. Half my jokes they laugh at, the other half they look at me funny. I don't want to explain the odd half by saying they are the result of bad social skills or some 'syndrome' of the brain called autism, and thus damage the image of my good half. But hopefully, if I get to know someone for a long time and then tell them, they will look at autism through the lense of ME, not me through the lense of autism.