On the other hand, I've met high-functioning autists that feel offended at the idea that people want to cure them. My cousin is on the "very crippled side" of the spectrum, so I'd give anything for a cure. So I guess if the person can understand the concept, it should be their own call.
Beneath superficial success and contribution, my life is a nonstop Munchian scream. I find it less insulting when people say everyone on the spectrum should be exterminated, than when people say some of us should be allowed to continue existing because our particular end of the spectrum happens to write pretty code / invent pretty theorems / etc.