I would rather be taken too seriously, too. Because, like you say, even if it's annoying at least you know they care and are trying to help.
I was completely ignored and never taken seriously. And I think the time when I needed it the most, people actually "played along" and discovering that was a horrible, horrible thing to learn.
I understand what you mean when people say "you're too normal to have BP." It's dumb because a lot of times their only knowledge of it is probably from media which makes us all look like violent, abusive crazy people.

Or it's some story they heard from someone about someone elses experience....