Atheism is simply the disbelief in the existence of God or gods.
I would think that most atheists would also be highly skeptical about all superstitions, the paranormal, the existence of ghosts, the supernatural, divination and so-called alternative medicine (that is, non-evidence-based medicine).
Atheism and rationalityThrowing out the delusions of religion forces us to think for ourselves and to question any beliefs that we may have that are not supported by sound evidence; in short, it encourages us to think rationally.
Belief and evidenceAtheism is the greatest step that any religious person can take toward dispensing with all beliefs that are not supported by evidence. The adoption of atheism is a major step toward clear thinking.
Why an atheist has no need to fear deathTo an atheist nothing comes after death, no judgement, no purgatory, no reincarnation, no heaven or hell. Death, to an atheist is like going to sleep, but it's a sleep from which there is no awakening. Very few of us have any fear of going to sleep.
Free thoughtAn atheist doesn't have his or her thoughts constrained by rules that were written long ago by people who we know nothing about.
No religious delusionsAn atheist doesn't have delusional beliefs such as the logically insupportable idea of an immortal soul. The greatest delusion that comes with religion is the belief in supernatural beings; non-belief in gods, spirits, angels, demons and devils is a fundamental of atheism.
Atheism is antipathetic to delusionOf course atheism does not guarantee that there will be no delusions, we all should examine our beliefs to make sure that they are all reasonable. But atheism itself moves people away from delusion and toward rational thought.
Atheists are free to develop ethical standardsSince atheists don't have the, largely outdated and often seriously flawed morality that would come from a literal reading of holy books they develop ethical standards based on sensible thought processes.
Atheists have to think for themselvesNot having stories about how the world came to be, how humans were 'created', how commandments were carved in stone by God, forces atheists to think for themselves about these things. Not having a limited set of 'moral laws' that were written thousands of years ago when society was very different from what it is today, frees the mind to consider how we should live in the modern world. Holy books say nothing about modern problems (think climate change, the refugee crisis, overpopulation, resource depletion, etcetera). Modern people have to find answers to these problems using clear, critical, free and rational ethical thinking.
Religious scientists who adopt atheism can de-compartmentalise their mindsScientists who are religious have to think in one way: openly, rationally, critically - when working on science, and switch to thinking unquestioningly, dogmatically, when in religious mode. Perhaps surprisingly, 'compartmentalise their minds' in this way does does not seem to cripple them in the practice of science. Some great scientists, including Einstein, were, at least to some extent, religious.
The ability of some scientists to compartmentalise their minds in this way has long intrigued me; it seems to be one of the strange quirks of humans. Perhaps some day other scientists will explain how it works.
Opening our minds about deathIf we dump erroneous religious beliefs about life being a god-given gift we can think freely and rationally about death and assisted dying. We don't allow our domestic animals do die long, slow, painful deaths. Religion has been the greatest impediment to providing the same humane consideration to our fellow humans.
Related pages on external sites...Atheism in Wikipedia
Atheism in Rational Wiki
In this article Professor of psychology Benjamin Beit-Hallahmi profiled a likely atheist to be this person – “We can say that atheists show themselves to be less authoritarian and suggestible, less dogmatic, less prejudiced, more tolerant of others, law-abiding, compassionate, conscientious, and well-educated. They are of high intelligence, and many are committed to the intellectual and scholarly life.” That sounds like a pretty good person.
Also by Benjamin Beit-Hallahmi, The likely atheists, published by The Guardian. "A century of research has highlighted that atheists tend to be well-educated – and that top scientists are especially godless"
Top 10 benefits os atheism; from the book 'Why there is No God': simple Responses to 20 Common Arguments for the existence of God.
10 Reasons Atheists Do It Better; Big Think "There is a growing number of atheists in the world. There is also a growing amount of evidence pointing to the benefits of non-believing." 2016/04/19.
Related pages on this site...The absurdity of religion
Chatting with Michael
The disaster that is religion
Ethics and religion
Freegard and Religion
Is God real?
Is religion delusion?
Islam's threat to freedom and progress
A rational 'religion'
Religion is a false belief
Science, religion and delusion
Visitor's guide to religion
Why doesn't God talk to us?
Also of possible relevance are some of my pages on ethics.