Being raised in a religious society (or family) does not compel you to take up the same faith nowadays, but the morals and the ways of action are enforced on you. U.S. is a puritan society through and through, and the atheists carry on relatively the same values as theists. [Edit: that's my theory.]
I sort of agree (I guess ).
I've posted before that religion is a developmental necessity. It is a key factor in our current regard for morals and moral behaviour. However, it's high time to realise that our morals are self-beneficial and self-sustaining; there's no need to instill a fear of retribution simply because "evil" behaviour is resource consuming and largely unprofitable.