Atheists commonly claim to be totally ignorant of God and generally people say it is hard to know that God exists, but this isn’t true. It is hard to have a saving knowledge of God, but it is not hard to have a sense of the existence of God. In almost every culture throughout the ages people have believed in some form of a god or gods. There is an innate sense that there is something or someone greater than us, beyond this world. There is a sense that someone or something must have created this world. There is also a universal sense of right and wrong. Not that every culture has exactly the same “rules”, but there is a remarkable set of core values. Even secularists and atheists believe in practice that somethings are right and others are wrong. However, men have chosen not to live by the truth. We see this very clearly in the West. Science is sometimes seen as a means of “disproving God” (by the way I am in no way anti-science, I have a degree in mathematics, a PhD in engineering and work in a science and engineering faculty of a university). Proverbs says that the fear of the Lord is the beginning of wisdom (Prov 1:7, 9:10), when we abandon this our thinking becomes futile. There are several examples of this today. One is some of the absolute nonsense that is bandied about with regard to transgenderism. If anyone took a cold hard look at the matter the nonsense would be evident, but to point this out is to risk being branded a bigot or worse. This is not to say that "gender dysphoria" is not a serious condition, rather that society's current approach to it is wrong, does not help individuals, and is harmful to society. In debates about abortion the fact that it involves killing babies is just overlooked or counted as insignificant. Look at how excited some get when a distant planet is similar to our own, and all the excitement mounts about it possibly harbouring life. The truth is we have no idea how life came into existence in the first place, and so actually have no idea at all if a planet light years away had life on it or not.
Much of human wisdom is indeed foolish, but worse than that it is also very dark. Abortion is an obvious example, and some of this has being exposed by the Planned Parenthood videos. With transgenderism there is a move to promote this stuff with children, in any other context this would be considered close to child abuse.