Having actually met and talked with people who believe that the Earth was created in six 24-hour days about 6,000 years ago, I can attest that you won't get very far trying to persuade them otherwise. Hate mail of course is awful, especially coming from people who call themselves Christians. And damning people to hellfire is especially appalling. Judgment is God's job, not ours and I believe (and hope) that His mercy is the determining factor and that what counts most is our acts of kindness, not our inevitable failures. I am sure that even Professor Dawkins has performed many acts of kindness in his life and they are far more important in the grand scheme of things than his third-rate philosophizing. As for David Attenborough, I met him once and he's a grand gentleman.