Ever heard the saying there's no such thing as an atheist in a foxhole? This is based on the idea that all people, when presented with the fear of death will naturally and involuntarily gravitate towards the ideal of a God.
And fear is what most monotheistic religion is based on, take away that fear and you unchain the beast so to speak.
But anyway enough about that, you're going on assumption just as much as I am, I never said what theory I favour with regards to creation. I actually do favour the big bang theory, rather I was defending the reason people find it easy to believe in God. As someone said earlier when you bring Him into a debate you divorce it from logic and reason anyway, the two theories are not comparable.
And identical twins... An identical twin does in fact have his own identity or soul so to speak, so would feel at the very least less need to usurp his twin, though this is an extreme example. What I'm talking about is an exact copy of the person created by unnatural means, of course it's easy to say you could cope with your own identity but you're not thinking about the clone himself... Imagine having someone who could potentially steal your identity (we're assuming now you don't have a twin). Then imagine you're the clone...