OK--- Whats with all these vacuum lines???

After doing some research, poking around and reading posts I wanted someone to tell me:

Whats up with all these vaccum lines?

The Germans must be "great plumbers" to have installed such an eloborate system of vacuum lines!

But my main question, for the Techs is: Why? Why use all this vacuum technology, when electrical, makes more sense?

Why? Install a vacuum system, you KNOW will eventually leak?

Why? Does the whole car seem to be tied into a vacuum line?



1983 MB SD300 Diesel

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KyCol

1983 300SD Turbo-Diesel