Judaism, especially to the lay person, has little to do with methaphysical assumptions. It's actually created as an all-encompassing system of social sctructure. Much like Catholicism in the middle ages.
As such, Jews, especially now, emphasize the importance of having a close, personal relationship with their YHWH. It also places great importance on familial ties and ritual such as marriage and death. This works well because:
-to understand fully the religion, one must study extensively the laws, as told by the Torah
-blind faith and allegiance is abhored. Meaning that all must be questioned. Since this occurs, the ultimate step from rationality and objectivity is to accept God.
-Closely knit communities and a duty to help followers causes adherents to cooperatively undertake projects. "many hands make light work"
-the large tradition and a 4,000 year covenant makes sense to members of the community and they rarely deviate since all social, spiritual, and mental needs are met
lastly, while having a methaphysical conception of an afterlife, stress the importance of a good and happy life in the presetn. They believe that they should be stewards of the resources God has given them. The trick is to use those resources wisely and for the benefit of many.
hope that helps