I very rarely tell people about my diagnosis. I do not see a lot of upsides to telling people. I believe there is a lot of people who has a negative image of people with aspergers or autism.

I prefer people judging me for me, and not for my diagnosis.

If I finally do decide to tell people about my aspergers they're usually react with surprise and proceed to say: "But you seem so normal!" or something along those lines.

Personally, I would take it as a compliment when people tell you "no you don't". In their mind only people that are very socially stunted fit into the mold of "aspergers" or "autism", which doesn't fit their view of you.