How can these atheists feel any joy within themselves and their lives in general? How can they post a slanderous comment right before bedtime, go to sleep happy about it, and wake up rushing to see who responded to their slander, day after day? These atheists who claim to have superior knowledge over those who believe in God live such a lifestyle that is proven by science (their own unofficial religion) to be emotionally unhealthy, which is a contradictory lifestyle — yes, anger, in the long run, has a damaging physical effect on the body as well as the mind.
It should also be pointed out that if atheists truly are superior in their intelligence, they would be aware of the fact that there is extremism in which people murder and do terrible things, including but not limited to things in the name of Jesus. Propagating false doctrine and incorrect interpretation of scripture is an example of extremism among those who claim to be Christians, especially Catholics. Atheists read bible scripture and interpret it through the lenses of their ideals; when it doesn't match up with their ideals, they reject it or attempt to falsify it, which is the basis of atheism and liberal "churches" today. Atheists are generally ignorant of the bible and in many cases, willingly. 2 Peter 3:5 says, "...for this they willingly are ignorant of, that by the word of God the heavens were of old, and the earth standing out of the water and in the water..."
The general consensus among many mainstream scholars — and this is my own opinion — is that atheists base the claim (that God doesn’t exist) on negative emotions and experiences rather than rational thinking. eg “Someone made me go to church as a child and told me I was going to go to Hell if I didn’t…I was traumatized by it…Therefore God doesn’t exist.” “Dishonest people who claim to be Christians try to con people out of their money…this makes me angry…Therefore God doesn’t exist.” “The way to God as told by multiple pastors are too varying and confusing…Therefore God doesn’t exist.” “God committed genocide as told in the bible…I SAY that is not moral...Therefore God doesn’t exist.” As one can see, there are major logical fallacies in these arguments put forth by atheists — that is, they make tremendous and irrational leaps in logic, creating false conclusions. I can go on and on. These conclusions are drawn based on emotions rather than rational thinking, and yet the majority of atheists claim to be the “rational thinkers” of modern-day society. Commenting on some of the paraphrased arguments above: 1) Going to a building on Sunday morning isn’t going to save us from Hell — this is, unfortunately, a lie put forth by some organizations. 2) Indeed, people do try to con others out of their money while masking themselves as Christians which is a sign that they are probably not real Christians. 3) There is only one way to God according to true non-denominational Christianity — not several as various pastors have put forward — see The Definition of Salvation. 4) Regarding genocide, stop believing what angry people say on the internet — study the Bible more closely and (if necessary) obtain counsel who understands scripture in its proper context. Perhaps more context to genocide in the bible will help. One of the most common complaints against God is that he authorized the slaughter of the Canaanites. The Canaanites were actually doing what people today would consider evil. They sacrificed babies to one of their deities called Molech. Molech was a bronze statue of a bull with outstretched arms — The statue was heated up and babies were laid on the hot arms. Drums were played loudly so that parents could not hear their babies crying in agony while they sizzled to death. God always has good reasons for doing things, just don't take the word of haters on the internet. Do your own research.
Whatever the case, the claim that God doesn’t exist is not tenable, or livable. If God doesn’t exist, then objective truth doesn’t exist. Without a logic standard that transcends humanity, it’s everyone's opinion against everyone else’s. If objective truth does not exist, then the claim that "God doesn’t exist" falls apart since it claims to be objective truth.