A German humorist put it like that :

"Religion is when one dies nevertheless/regardless/anyway."

(Original : "Religion ist, wenn man trotzdem stirbt.")

Besides, I once saw an interesting documentation on TV regarding the Christian "Paradise" : It seems to have existed in real at one point in early human history several ten thousands ago : A deep valley in the Ural Mountains, a tiny area with a unique climate … Now the valley is filled with a bigger town. The Paradise is lost forever.

This is why I love Archaeology : Unearthing long lost forgotten secrets …