They did not need to be disturbed, and if you consider the fact that life evolved from a single cell, and hundreds of millions of years ago, Mammals ran and hid from dinosaurs to protect their families. We are not any different than a cell that differed in its path. Let it be a blade of grass or a 150 year old tree, a Silverfish or a Tyrannosaurus-Rex, a Copepod or a Great White shark. We are only life and to that extent the only conclusion to draw from the destructive human nature that mapped out our history, we are a mere infestation, we are a bacteria. We have covered the nature Earth that was once a freshly cooled down crust of volcanic valleys and oceans from melted meteors sites. The way life happened is the same was the Europeans took the America's. They destroyed many beautiful ways of life but only to put in place a more industrious - high-tech society. However just like short lived fads, in the spectrum of time, this way of human life was a fad. To want to grow, to want a family, to want to create. This desire is slowly leveling with realism. We are considering financial and political restrictions towards the decisions we make to grow our family. We are reaching the scientific peak (or so we think) and discovering ways to combat disease and plague. We are fighting to live long and long, and succeeding. King Tut died when he was 18 years old. We will discover immortality and look far, far, far beyond the America's, and deep in to space where we never thought we'd go.