People and religion both evolve. Religion evolves to become more compatible with the changing people. Thus, religion will never be completely wiped out, but always evolved until maybe it does not resemble religion so much as it does a spirituality that is recognized as more comforting than anything akin to the primitive worship of a deity.
"Never trust a fox. Looks like a dog, behaves like a cat."
~ Erin Hunter
~ Erin Hunter