Can "Freethinking" be paralized?

Dan Barker writes

Any morality which is based on an unyielding structure above and beyond humanity is dangerous to human beings. History is filled with examples of what religious "morality" has done to worsen our lot. Whole cities can be gleefully exterminated in God's name. Society's "witches" can be eliminated. Free thought can be suppressed, squelching any hope for progress. (Why else were the Christian-dominated centuries called the "Dark" Ages?) Under Christian morality, anything goes if it furthers God's plan. In place of Lewis's Law of Morality, more enlightened people would champion reason and kindness: principles that are pliable and human, not rigid and cold.

A Christian may write:

Any morality which is not based on an unyielding structure above and beyond humanity is dangerous to human beings. History is filled with examples of what non-religious "morality" has done to worsen our lot. Whole countries have been gleefully exterminated in the process of removing God's name. Society's "preachers" can be eliminated. Christian thought can be suppressed, squelching any hope. (Why hasn't atheism brought forth its plan for the new morality? Is lassez faire good enough? Is anarchy atheism's answer to government?) Under free thought, anything goes if you want it to. In Lewis's Law of Morality, more people should champion reason and kindness: principles that are steadfast and of the nature that the Bible proposes.

Yes, it's OK to look at the glass half empty. It's also usually just as reasonable to replace most arguments and justify the position. I have hope, and I have happiness, and I have freedom of thought. I also have direction in my life. I have the ability to make decisions because I'm not a watch. I'm not a robot. I am responsible for my decisions. The difference is: if I have someone outside of myself to be accountable to, someone who is the goal of perfection, that is the path I want to take. Without that, I feel being good for good sake is likely pointless. I might as well do whatever I can to die with the most toys in this world, for the option is this life, and nothing more.