Seriously. Why would this be important? The development of our species is the most important event in our history. Unless you believe God placed you here. Which stating that "it was going to happen anyway" implies that you either believe God, aliens or something else made us and put us here.
If you don't want to go with that than go with LuisDantes suggestion of the human mind's development of abstraction which would be the next immediate step beyond what I stated.
We are essentially stating the genetic differentiation from other primate species that put homo sapiens sapiens on the planet in the first place.
Well, I think you misunderstood my statement which is understandable since it was less than a sentence. What I meant was that regardless of anything that happened, apes would of evolved into human's anyway (assuming the theory of evolution is correct, and yes, I do believe this theory) so why would this be important? Or lets say our species was devoured and went extinct before we fully evolved or even in the embryonic stage, then we wouldn't be having this convo.
In other words, we did not have to do anything for us to evolve into humans, it just happened. We didn't have to be clever and think of ways to be human, we just, became.
When I see an important event of human kind, it comes to mind something that is controlled by us, something we as a human kind have done that is important.