> The few dozen people I killed pale in comparison to the thousands of people that die in car crashes each year. So society should really focus on making cars safer instead of sending the police after me.

This is a very irrelevant analogy and an absolutely false dichotomy. The resource constraint (Police officers vs policy making to reduce traffic deaths vs criminals) is completely different and not in contention with each other. In fact they're actually complementary.

Nobody is saying the lesser problem should be dismissed. But the lesser problem also enables cancer researchers to be more productive while doing cancer research, obtaining grants, etc. It's at least nuanced. That is far more valuable than Alfalfa.

Farms also use municipal water (sometimes). The cost of converting more ground or surface water to municipal water is less than the relative cost of ~40-150x the water usage of the municipal water being used...