Our entire perspective on existence is based on where we popped up on the cosmological timeline. If we'd come along earlier, we may not have been able to perceive the expansion of the universe, and the apparent disconnect between the hard limit of the speed of light, and the size of the universe. If we'd come along later, we may have figured that we were completely alone in a static sphere, with no observable matter outside our galaxy.

I also find it fascinating that if we had come along a few thousand years earlier or later, our entire history would have been completely different. How effective would we have been as travelers if the north start didn't exist for us as guidepost in the northern hemisphere? So much of our existence is based on lucky chance.