William Lane Craig makes a standard argument in many of his debates that atheism can't explain the existence of objective moral evil. And he may be right, for any number of reasons. Ethics poses some interesting conundrums for the secular thinker, and it's not clear that anybody has actually nailed it. Like many questions in philosophy, the answers may never be forthcoming. But here's the problem. The answers from Christianity aren't any better, and in many ways are worse. They've been trying for 2,000 years and failing to come up with a valid reason why positing a god in any way rescues the foundation of ethics. So instead, they practice this little argument from misdirection, asking you to solve a major problem in philosophy when the answer that they have isn't any more valid or compelling than the secular alternatives. Not that they won't claim to have solved it, just as many secular thinkers such as Sam Harris have claimed to have solved it for secularism. You don't get points for claiming to have the answer; you get points for actually showing your work. And Christians like ronedee will tirelessly repeat the same failed arguments that Christians have been making for centuries, shitting on the chess board, and crowing about their grand victory. But then, Christians have ignoring reality down to a science.
For what it's worth, I rather suspect ronedee's persecution complex may have some basis in fact. But people don't hate him because he's a Christian. They hate him because he's a jerk.