Autism does have advantages but it almost always makes social interactions difficult to a greater or lesser extent and so much of what goes on in life requires social interaction.
I was talking to someone yesterday whose son is described as having high function Aspergers, but his father was describing the problems he has had making friends at a big primary school because of his odd manner and obsessions and that he is moving over 100 miles to a rural area where schools are smaller to find a school environment where his son will, hopefully, flourish.
I know two other people with undiagnosed, but probably autism. One has rarely worked, he wants to, but loses jobs as soon as he gets them because of his 'rudeness' to people. The other is a highly qualified IT expert who rose high in his field, but everyone I meet who worked for the company knows of him, at least by repute - and it is more for his perceived 'rudeness' and lack of some social skills than his brilliance.
Autism may bring its benefits, but certainly brings its problems.