I have this irrational penchant for assuming we humans will, eventually, let our better angels of empathy and rationality win out in the long run. This plays to that aspect of my psychology.
Of course, there are so many other reasons not to vote for Republicans that you don’t need to point out the fact that it’s been completely and thoroughly awash in scientific denialism for decades and fix that alone to get me to consider them rational actors on the political stage. You’d also have to untie them from religious zelaotry and magical thinking about economic factors and war hawkishness… et cetera, et cetera.