Do red avatars feel insecure about their moral standing? What would be the point of this thread if not to shore it up in one's own eyes?
It's driven by what is sometimes called 'morbid fascination'. The GOP's continued loyalty to Donald Trump - their collective decision to become a hate-filled death cult lacking intellect, morals, or self-awareness - is a horrific and tragic disaster of immense proportions. Such disasters trigger survival instincts and compel attention, so we can decide between flight or fight. (A particularly apt comparison, given the "Republicans" intent to turn America into racist authoritarian state, or destroy it trying.)
Edited to remove my unfair comparison of the Republican party to members of Porifera.