Biden should be commended for his support for Israel and one can even argue that he's a bigger lover of Israel than Trump. But:
1) Support for Israel is not the only thing that's important
2) Conservative values may be even more important - Supreme Court judges are extremely important for the Jewish community in the US and Israel
3) His love of Israel does not necessarily translate into love of Jews. VP Biden was dead set against freeing Rubashkin.
4) The economy also matters
5) A Democratic pres. is influenced highly by his fellow Democrats, many of them, not the biggest lovers of Jews. Trump is influenced by fellow Republicans, most of them, big lovers of Jews.
6) Biden may die in office, or get impeached, or resign, or get senile and then it won't matter at all what he likes and does because the VP will take over. Lets wait and see who he picks first...
7) Lets see how Biden deals with the situation the more the anti-Israel protests pick up and the more the "innocent" Gazan casualties start mounting
8 ) Trump has done more for Israel than almost any president before him, based on logic. Biden was shocked into this by also the atrocities. Feelings tend to fade. Logic does not.
Just a few things to think about before running to vote for Biden over Trump.