When I say blinded I am not saying you are ignorant on this subject in any way. I would bet your knowledge dwarfs mine by a factor of thousands. What I am saying is that you clearly have no objectivity and this comes through in your statements:
Israel is an underdog in the region
Israel are the "good guys"
Israel clearly has the overwhelming support of the American public
These just aren't representative of reality. Most people do not view this situation in such black and white terms.
Also, your refusal to list any benefits isn't helping credibility on the benefits. There are probably many I have not considered. I am not aware to the degree that Israel's CIA equivalent helps us find and deal with terror cells. I am not looking to discredit the benefits. I just want to know what they are.
First off, you are correct, I am not objective, as you put it, on this issue. I have studied the situation, learned what I can about it, and made a decision as to where I stand. The minute that I do this on any issue, I lose my objectivity. But only to a certain extent. If I learn new information which contradicts what I know that may cause me to change my opinion. Also, if Israel were to become a bad nation rather than a good one I would change my mind about them. As far as "black and white" goes, it depends on your interpretation.
I am highly critical of Israel for certain specific actions, but I don't think those actions are representative of Israel as a whole entity. To me, that's a nuanced position. I think that those who point to actions by the Israeli government and use those as proof of the evils of Zionism are much more guilty of a black and white viewpoint than I am.
You're quite welcome to google "American benefits from friendship with Israel" and see what you get. As I wrote, there is plenty of technological, strategic, and economic benefits. I regard them as peripheral to my argument.