W, you misunderstand so much - I am amazed that you do not possess the capacity of Greta to see.
You see, this is the one universe and what we do here on earth affects our very own universe.
We want to colonise the Moon, Mars, etc. Indeed we have countries vying with each other to reach Mars first. But if the CO2 that we are emitting with gay abandon impacts on Mars and other planets in our solar system, we will not be able to land on them planets because they will have become so much hotter (a furnace even) and the melting of the polar ice will have led to catastrophic flooding of the whole planet. So what will be the point of wasting our time and money going there?
