We have the rest of the Universe that is untouched by human hands As Carl Sagan would say, there are "billions and billions" of stars each with its own solar sy

We have the rest of the Universe that is untouched by human hands As Carl Sagan would say, there are "billions and billions" of stars each with its own solar system. We have a long way to go before contaminating everything. Some people find reasons to be depressed.