It is not possible to "set aside the emotional and religious anchors of the US-Israel alliance." Those are the principal bases of the alliance. Israel’s welfare is a self assigned interest of the United States. That does not make that interest less real, but it renders the interest a "duty" of a spiritual and moral nature rather than the kind of thing that a British PM meant in the 19th century when he supposedly said that "countries do not have friends or enemies. They have interests." That kind of interest confers an advantage militarily, economically, geographically or in some other material way. The US interest in Israel’s welfare does none of those things and it costs a lot of money. The Israelis have been careful to separate "things" into neat groupings. They have operated on the basis that their things are their things and US things are their things. I was the principal officer in the US military intelligence relationship with Israel for many years. That was how the relationship worked. It was not a truly two-sided arrangement. The products of Israeli intelligence are sometimes valuable but often do not reach the standard of the legend concerning them. The reverse is not true. US military operations have not been benefited by the relationship with Israel. Israel does not want to be a military client of the United States. Our operations in Iraq and Afghanistan have not been based in or logistically supported from Israel. Israel has never functioned as an "unsinkable aircraft carrier" for the United States and it does not wish to do so. Aside from providing useful liberty ports for the Sixth Fleet’s sailors and marines, and an occasional venue for small military maneuvers, it is hard to see what Israel does for the US in the military field that is worth the trouble that the relationship causes diplomatically with the surrounding states. Israel does not contribute to the well being of the US economy. In fact, in many high tech fields Israeli companies are competitors of American companies. I will not dwell excessively on the USS Liberty and Pollard incidents. Those events speak for themselves and most Americans have long ago forgiven the offenses and chosen to forget.
No, in the end, the US/Israel alliance is an affair of the heart. Such affairs are not to be analyzed too closely on the basis of mere material interests.