Wow. For all the self-praise on this site, I would expect to have seen at least a hint of recognition of the part that the past of Israel itself plays in all this. I’m not seeing a mention.
Remember when Israel was created and why? It sure as hell wasn’t set up as a European Invasion Back Door, just in case those pesky Germans got frisky again. It was created primarily because some of the VICTORIOUS nations and Empires promised to do so. The stated reason why it was promised, was to create a homeland for the otherwise stateless Jews, with the somewhat foggy idea that a people who DO have a “home state,” will somehow be better served on the international scene, than those without one.
Next, in a general way, following World War 2 and the creation of Israel, the worldwide battle between the Soviet Union and the United States, was fought in proxy countries around the globe. In the crucial Middle East (oil), the Russians worked to ally themselves with various countries,and so we did as well. Like competitors in a bidding war, they got Arab states (in large part because the Arab states didn’t care for the US’s primary allies, their immediately previous Imperial masters, the French and British), so we got what we could, which was Israel, and Turkey.
As the USSR went into collapse and the Middle East power blocks shifted, Israel changed from being a hedge against the Russians, to being a hedge against first Arab, and then Islamic anti-American concerns.
Whether or not it has been wise to make Israel so important, is a separate question.
Oh, one more big element in “why we act like we like Israel,” has nothing whatsoever to do with Israel the place. Israel the IDEA, gets certain people in the United States elected or not. Pretending that Israel is hugely important to us strategically, regardless of reality, is still a big DOMESTIC political game card for politicians to play.