Why do people insist on referring to all of the city of Vancouver as “downtown”?

Why do people insist on referring to all of the city of Vancouver as “downtown”?  I seem to have this equivalent of this conversation on a regular basis:

Me:                             Have you ever been to The Naam (or some other location in Vancouver that is not downtown) ?

Other Person:        No, I hardly ever go downtown.

Me:                            Oh, it’s not downtown. It’s in Kits.

Other Person:        ???

Then today, I saw this in an email from Groupon:

Kits does not equal Downtown

It’s called KITSILANO Laser and Spa Centre. Kitsilano is a neighbourhood in Vancouver that is *not* downtown.

There is a part of Vancouver – a very *small* part of Vanccouver, I might add – that is known as “downtown”. It’s written right on the map!

Here, I have annotated the map for you:

Vancouver

I trust this clears things up for everyone, yes?

</rant>