For some reason, some folks like to set working on global hunger and thirst up again space exploration.
I have never quite understood it. Obviously, we could use the money used for space exploration in that way, but it’s a tiny bit of just a very few countries public budget, and a great deal more money is spent on things like war, the military, pet food, products used once or twice and then thrown out, and even celebrity magazines. Knowing that, why use space exploration as an example of supposed waste of money?
To me, alleviating and preventing hunger and thirst comes from a similar place as space exploration. For humanity and Earth life to survive for any significant length of time, we need to become a multi-planet species. Being limited to one location makes us far too vulnerable. We are Earth exploring space and contemplating seeding itself onto nearby planets and perhaps even further out.
That’s also preservation of life, and if we think preserving individual lives is important (which I do), then preserving whole species and ecosystems over longer time spans is equally important.
To mention a few more things: Space technology and exploration has also allowed us to get a much better overview on the Earth as a whole in terms of science, sustainability, and in our minds (we are the Earth seeing itself from the outside, and that has tiny but profound effects for humanity). Space technology and science have helped us down here in many ways. And it’s inherent in us humans to explore and space is one of the current frontiers. (It’s not the frontier since there are many, and it’s also not final.)