I've noticed that Jews who leave their religion almost never become Christians. They usually become atheists, or Buddhists. Buddhism is understandable. It resonates with many Jewish people. The original Buddha was an Israelite of the Dispersion, a blue-eyed Saxon. He rejected, not Hinduism so much, but the teachings of the rabbi's and priests. Like Karl Marx, Buddha came up with a religion that rejected Torah, but still carried a lot of Torah in it. That is why Communism and Buddhism took off and became such popular religions, because they are based on the one true religion.
I thought this article by James B. Whisker was interesting:
Karl Marx was not only Jewish, he was descended from an established rabbinical family. His father had abandoned the practice of Judaism in order to function more freely in and with the newly established Prussian state, and in order to attract more clients to his law practice. Biographers do agree that age-old Jewish traditions continued to run deep in Herschel Marx's family long after he had ceased attending the synagogue. Karl Marx probably had no formal ties with Judaism, but he was acutely aware of its theology and its traditions. Lack of formal practice cannot here be equated with ignorance. Indeed, Karl Marx apparently had studied the bases of all Western religions throughout his life.
As a "Young Hegelian," commonly known as the Hegelians of the Left, Marx had been exposed to the often bizarre interpretations of organized religion. Among the earliest of his publications was The Holy Family, little more than a plagiarism of the leftist Hegelian leader Ludwig Feuerbach's Essence of Christianity. It was in the juvenile Holy Family that Marx coined the oft-quoted phrase "Religion is the opiate of the people." The idea was hardly original with him. It was a reasonably cogent summation of one of the principal of Feuerbach's ideas, which was that man is alienated from himself by virtue of his dependence on God. By concentrating on God and by assuring himself that God will right all wrongs and reward all sufferings in the next world, man is said to fail to realize that he can correct injustice and prevent the evils of the world in this world by and through his own efforts. Religion has a narcotic effect by soothing us so that we do not mind that we are miserable. All our sufferings, trials and tribulations, sorrows and despair are part of a divine plan wherewith we work out our salvation; thus they are to be accepted and cherished, not defeated or circumvented or prevented.
The Holy Family was an attack on all religion, without prejudice against any one specific variety. There was no real attempt in it to separate Christianity from Judaism. Inasmuch as many of the Young Hegelians were apostate Jews, some had shown especial concern for the status of Judaism, but not prejudice against Jews for religious reasons. Hence, in a sense, freedom from religion was really a form of release for Jews. These leftist followers of George William Frederick Hegel assumed that without any religion in the new state there would be no point of separation between Jews and Gentiles, ex-Christians and ex-Jews. The onus of "Christ killer" would no longer be meaningful, any more than accusations leveled against any other group for killing any other individual or group of individuals. Indeed, Christ as a rejected symbol of false hope would be killed for a second time, and at least this second death would be the cause of liberation, rejoicing and new hope for the suffering masses. With most of this Marx could wholeheartedly agree. Christ had to die a second time, and this time there would be no resurrection. Marx agreed that without religion there could and would be no religious persecutions and prejudices. This was a sound example of an analytic logic in which he had great faith.
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Read the full article here: Karl Marx: Anti-Semite, by James B. Whisker