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Just a couple of quick notes:
1) Human nature being what it is, most people will be inclined to conclude that there's not enough choice as long as none of the available choices satisfy them. Once something satisfies them, though, any additional options are liable to be labelled superfluous and unnecessary.
2) The first piece, I believe, referred to wars that might not have been fought had religion not existed. Religion has often been trumpeted as a justifaction for war -- as in the Crusades or in the medieval Islamic aggressions against northern Africa and Europe -- but these wars are actually provoked by the usual secular concerns. Ideology plays the same role: Hitler, Stalin, Mao, etc., did not make war to advance their beliefs. They made war to acquire territory, secure wealth and security, etc., as did their medieval predecessors in Europe and the Arabian Peninsula. If real religious faith has had any impact at all on war, it is probably to slightly reduce the number of people willing to participate.