I find it odd when people with Asperger's/autism see no positives to it at all, but certainly many people see it as just a different way of being. It most certainly is a disability, however, for many people. I went undiagnosed until the age of 21 because my parents hated doctors and felt psychiatry was used as a crutch. However, I was also very suicidal from thinking all my difficulties were made up. When I did see doctors because I was extremely suicidal, they thought I was schizophrenic and had brain damage. In retrospect, the psychologist said very few people would have been able to force themselves out of bed in my position, but I had a 4.0 gpa in college and was doing work-study/volunteering. While I managed to do that for a short period of time, I lost a lot of communication skills and felt like my brain was destroying itself. I am unable to work and can't go to school at this point (all through school, undiagnosed, I did have major problems in school and needed to be homeschooled eventually). Being undiagnosed doesn't necessarily mean anything other than the person might become *more* self-loathing and *more* incapacitated. That was certainly what happened in my case. I have no self-pity, either. But I do need lots of daily assistance and can't take care of myself properly. This is simply a fact of my existence, and no amount of effort makes me magically have these abilities.
There are many things I can do, and that make me happy. I enjoy life very much. I'm not negative on autism, despite the fact that for me, there are a number of disabling effects. But autism/Asperger's is also a pervasive developmental disorder, which means it really *does* affect people in a great variety of areas. Not necessarily negatively, but I know for me, my thought processing and sensory awareness are very different from most people's, so autism does affect many, many aspects of my life. I don't think the us vs. them mentality is at all good, and there's a huge variety in what autistics and non-autistics are like. I can relate well to a number of non-autistics, though they do all have something a bit "odd" about them and often some autistic traits, if you will. And people do have to try and be considerate of others and figure out what they, as an individual, are capable of and comfortable with. That goes for anyone.
But as someone undiagnosed for a long time, I didn't fit in more or become more successful in self-care by going undiagnosed. I was only made extremely miserable and everyone around me just didn't know what was going on. Things simply felt hopeless and I felt very alone, as only one person I knew could relate at all to what I was experiencing (this girl is now also diagnosed with autism). And this isn't an exaggeration, given before AS, I was diagnosed with schizophrenia/schizo-affective 7 times between ages 16 and 21. And before then people were still every bit as confused and off-put by me. The social aspects of autism, for me, are actually one of the less debilitating areas, so I don't feel bad for myself due to a lack of friends or anything (though it was always difficult for me to have/make friends).