Really hard to say universally: the circumstances are all up to chance, and just a series of pros and cons. But, there's probably the highest chance of the pros outweighing the cons in getting diagnosed/behavioral training at an early age.
In my case, I was diagnosed with AS a few months ago, and was also diagnosed with generallized anxiety disorder, which very likely would at least be somewhat less if I'd developed without having to be on high alert all the time. Knowing about AS has given me present insight on all my stupid little foibles, but if I'd been able to better grow into my poor planning/organization abilities and poor social maturity/awareness, instead of always trying to compensate "typically," with things I'm naturally bad at, I might feel a bit better about where my life is going now.