Inferior Terrestrial Beings

I was wikiing few days ago and I came across the Kardashev Scale. In a nut shell, this is a method to classify how technologically advanced a civilization is. This scale defines 3 types:

Type I: a civilization that is able to harness all the power available in a single planet.
Type II: a civilization that is able to harness all the power available in a single solar system.
Type III: a civilization that is able to harness all the power available in a single galaxy.

As per the definition of this scale, we are a Type Zero civilization and we will continue this way till the 23rd century when we are expected to become a Type I civilization (by the year 2200 AD). So let me ask you this: how big of an inferiority complex do we, as humans, suffer, that makes us score a ZERO on a scale of OUR invention, while we are still the ONLY civilization on it so far?!