Atheism is destructive in what way?
Well I hope you agree that if the God of the Bible is real then maybe you can see how atheism could be destructive? Atheism considers many sins to be inert, or at least, makes it easier for one to commit a sin or crime when they do not feel there are any eternal repercussions. IOW, if you can get away with cheating on a test to procure a higher grade or a job, an atheist is more likely to be dishonest than a devout Catholic who fears sin and purgatory. You also would be more likely to cheat on your spouse. I am not saying Christians do not cheat as well, but I am saying if they were not Christian they would surely be doing a lot more cheating. And that causes breakdowns in the marriage and destruction to the children. That is a harm of atheism.
Atheism has less value on human life. It enslaves and oppresses its own people and is more likely to cause upheaval in other lands. For the last 75 years has the world been more afraid of Christians USA, Britain, France and Jewish Israel having nuclear weapons, or more afraid of atheistic Soviet Union, China, and Islamic Pakistan and Iran having them? Finally, your chances of getting to heaven by telling God he is fake and not praying and doing nothing to please him are far, far worse than one who believes and prays. Atheism is bad for society, period.