Why aren't heaven and hell more discussed in the Torah? How can we really believe in Olam Haba if we don' have proof that it exists? Why do we want Techiyat Hametim to happen if Olam Haba is so amazing? Who goes to heaven and who doesn't?
Life is comprised of many challenges which raise many questions about how G-d runs the world and why bad things sometimes happen to good people? Rav Kook suggests that this is essential for life and spirituality.