Forget about human beings. As far as we know, Earth is the only source of life in the galaxy or even universe. There is no guarantee it exists anywhere else, or that it will continue to exist here. In fact it is certain one day life will cease to exist on Earth.
As the only life form capable of spreading it off planet, I feel like we have a moral obligation to do so before it is snuffed out.
As the only life form capable of spreading it off planet, I feel like we have a moral obligation to do so before it is snuffed out.