It'll never stop amusing me how blind we are to politicians that are "on our side".

Again, you're seeing this as some kind of clever invariant of politics, but it's not. People are blind to politicians on their side because Donald Trump has spent the past 10 years working hard to make sure that everyone in politics is constantly enraged at the other side. You're being "punished to hell", in your words, because you're blaming Trump's passionate embrace of hatred-based politics on his opponents.