I didn't state you had to believe anything "religious" to emulate Christ. You assumed that. What about the golden rule, as espoused by him? What about his other teachings, taken agnostically?
Also, doesn't this statement of yours conflict with the biological basis of behavior?
"Regarding the 1,000 years thing, Objectivism concludes that one should not sacrifice one's life for another. That makes looking out 1,000 years irrelevant and not worth discussing."
In other words, biologically speaking, is it not rational to concern yourself with the maximum survivability and prosperity of your offspring?
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