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Such developements of civilizations proceed over an extremely long timespan, and I am deeply convinced - proven by history until the current day - that a civilization whos ethics and goals are predicated on religious ideas cannot last such long, with the advancing of technology they will either extinct themselves or drop such irrational ideas from the bronze age.

Proven by history until the current day?  It seems to me that religions usually tend to outlive the societies that give rise to them.  Approximately 75% of Americans claim a religion that predates the founding of the country by over 1500 years.