The best theology is wisdom. It teaches you how to live. It teaches you to be most fully yourself. None of this, of course, detracts from the fact that science is also immensely beneficial to humanity, but today we do not have to choose between them. It is not a case of 'either/or' but of 'and'.
Perhaps, Dr Dawkins should ask himself why he feels as upset and threatened as his letter suggests. Or is he too afraid to face the probability that long after he and I are forgotten, Jesus Christ will be remembered and theology will still be leading human beings out of darkness into light?