Why can't selflessness, altruism and honesty prevail under the influence of secular government? I'm not saying our current governments have achieved this, but w

Why can't selflessness, altruism and honesty prevail under the influence of secular government? I'm not saying our current governments have achieved this, but we also see a great deal of selfishness and dishonesty in religious groups. We do have secular incentives that encourage altruism (eg. charitable deductions and state honours for people who contribute greatly to the community) and legal (conviction) and social (expulsion from public office) punishments for dishonesty in some cases. Isn't it conceivable that if these secular tools were used more effectively, we could achieve a non-religious society that values selflessness, altruism and honesty?