Support for Jews and support for Israel are, or can be, different things.
To me at least, Jews are a people who are in a minority everywhere they are, except in Israel. They have been savagely persecuted for being Jews, and, generally speaking, are big believers in education and hard work. For that, they deserve a unique form of respect as a group. Some individual Jews are, of course, skunks, as are some Catholics.
Israel is an ally of the U.S.; a bastion of western rationality and progress in a sea of despotism, thuggery and social chaos. The people are largely Jews, which makes them more predictable and understandable to westerners who are familiar with Jews in their own countries.
I am not sure I would prefer to live in a land in which the majority is Jewish, any more than I would prefer to live among the Mormons in Utah, and for the same reason. But if I were a Christian Arab, I would rather live in Israel than in any other Middle Eastern country, and that’s for sure, not because it’s Jewish but because it’s sane.