First, millions of people do not die daily due to lack of clean water.
It is estimated (according to the great oracle of wiki) that 1.8 million die annually from waterborne diseases.
This is thus c.5,000 a day.
Second, it takes just one impact of earth with a sizeable asteroid to delete our entry from of "The Little Book of Things That Exist".
We are in a relatively precarious position, tucked away on this isolated rock, unable to defend ourselves from what has happened in the past and will likely happen again in the future.
We, as a species, can protect ourselves to an extent by spreading, by taking hold on as many non-earth chunks of matter we possibly can.
And until we do we are at the mercy of a large chunk of rock.
So here's an idea: why not spend some of the tax-payers money, and heck, even let some private companies join in the fun, and start developing technology, in small steps, that will ultimately reduce the risk of our species dying out completely.
Let's set ourselves small technological milestones that, as a journey, will take us from sub-orbital, to orbital, to the moon, to a space habitat, and from there to Mars, to a lunar habitat, and who knows where beyond that.
Escaping our basket, in which all us eggs are currently placed, should be not just a a long-term priority but a long-term necessity, otherwise our species will die out on this very rock that we have always inhabited.
Is it appalling that millions do die seemingly needlessly each year?
Yes, of course, and I can see it only getting worse with climate change.
But we should not take our eye off the big picture.
Do what we can for our fellow human at the moment, of course, but not at the expense of restricting us to a single planet and the risk of a single event wiping us out, especially when the cost of trying to mitigate that risk, long term, is but a drop in the ocean compared to the efforts already focused on aiding our fellows in one way or another.