As an American Jewish young person from the Midwest, Jews are Jews because there is no implicit reward for following Judaism or being Jewish, we are also fucked genetically, which leads to all sorts of anxiety and sexual dysfunction. The only real joy in Judaism are the three festivals where getting drunk is permitted, and Passover. Aside from that, the only reward for following the Old Testament is the security of the People of Israel, but such a concept is so old and mismatched with current reality, that most Jews either misinterpret it or are apathetic.
Unlike Christianity or Islam, there is no incentive for being a “good person,” only punishments for stepping out of line. If you are a “good person,” but not a rabbi, you will either be worked to death by your local congregation or the community will avoid you out of insecurity, especially if you’re not religious. The services are also boring and esoteric in scope, so no one wants to participate. And in lieu of actual rewards for saintly behavior, many Jews become insecure and start pestering people (fishing for complements), or latch onto flawed religious beliefs and bludgeon people with them (mainly Jewish women do this), or they embrace amorality all together.