The idea isn't that the real world isn't real... the usual Christian idea, in fact, is that God will do some reforms, but in this world... that's why the idea is that Christ comes back, rather than that we go to a "more real world" where he is. The idea is not to attain the same sort of hyperreality as God.
I think that's what you find in the bible, but in religiosity (i.e. the kinds of things religious people say and do to us and to each other, as opposed to what theologians say is official doctrine) it seems to me that "good people go to heaven" and "after you die you go to heaven" are, at least, also common. There's actually quite a bit of varieties to choose from as to the question of what happens after death within abrahamic traditions, from purgatory to 'the dead remain dead until resurrection' to just being a shade to reincarnation in some forms of judaism (yes really, i didn't know either)
though you may be overestimating how big a deal things are. if one believes in reincarnation or heaven, then going to do those, are normal and not big deals to believers. being horrified at being reincarnated is like being horrified that your body is subject to gravity.
salient doesn't entail relevant: big deal here means, to be more formal, how totalizing a narrative is regarding one's life. if death is not actually real, and you can go to a good afterlife and a bad afterlife, then it's rational to dedicate a great amount of one's life to the attaining of the good afterlife (no matter how much better your life would be if you didn't try as hard, it's not going to be AN ETERNITY OF INFINITE BLISS better). by contrast, if capitalism is basically a pyramid scheme, or a system of control, then you may dedicate singificant effort to its destruction as a matter of principle, but it doesn't make sense to die for that, since you're not going to go to communist heaven or anything. at the other extreme, if broccoli is a gift from the god Bamak, the that fact demands almost nothing from you even if you believe it: maybe you'll thank Bamak next time you eat a bit, maybe you'll even make it a point to always grow some broccoli in your garden. It's basically a matter of how much it works with Pascal's wager, I suppose.