For me it's neither a curse or a gift, although it can, at times, seem like a curse.
Asperger's syndrome has made (especially when I was younger) my life seem like hell. Especially with regards to dealing with other people, but now days one could barely notice that I even have the condition. Learning to deal with people, and their reactions to different things, was key in blending in.
Asperger's has made various subjects, that I'm intrested in, vastly easier for me, such as History, various languages, etc. But it has hindered me greatly in things which I could care less for, such as math. I just can't get myself motivated in it, the moment I have to do something related to math, I just all motivation. But with work, one can survive that aswell.
All in all, I couldn't imagine what my life would be, if I didn't have Asperger's. But, if I was now given the, impossible*, choice of either keeping Asperger's or living without it. I'd probably choose to keep it.
*Since Asperger's is not something that can be 'cured'