Richard Dawkins wrote a whole book to answer that question; it is called "The God Delusion". I would suggest that you read the book if you really want to know. However, I will offer a brief summary. Viewed as a scientific hypothesis, the existence of God is not adequately proved by any reliable or objective means, and it raises many serious questions for which believers do not have good answers. Everything that religious people explain as an act of God can also be explained more simply as the working of the laws of nature.
Richard Dawkins is an atheist, therefore he believes that there are no gods in existence. This means he also believes that there is no life after death. I also know that Mr. Dawkins does not support intelligent design.
Atheists are not the only people who do not believe in the Christian God. They share this disbelief with many other, including Buddhists, Hindus and others. Atheists differ in that they neither believe in the Christian God nor any other god.
Whereas agnostics believe we can not know whether God or gods exist, atheists actually believe that God does not exist. In many cases, this is because they have looked at the supposed evidence for God and found it wanting. After all, no one has ever been able to prove that God exists.
Of course, one could argue that Atheism is a person's default state (we are born atheists), and thus a more apt question would be "Why do theists believe in God?"
Opinion:people don't believe in God because of:
1) Peer influence. In high school, for example, the one or two religious believers in a class may be subject to ridicule.
2) Convenience; desires. No one wants "bothersome" rules, or limitations to their personal pleasure. (But we see how lack of self-discipline has led to epidemic obesity, drunkenness, divorce rates, violence etc.)
3) Lack of proper information. People have inaccurate notions about God. They've picked up tidbits, jokes, and "sound-bites," and on such solid authority they dismiss the entire topic.
4) Unfortunate experiences. Many have had personal hardships, or a harsh religious upbringing or education, and as a consequence may retain an unhappy feeling towards belief, without realizing that emotions and proofs are two different things.
5) Many think that science, and specifically Evolution, have proved that there is no God. They don't comprehend that even if Evolution was an unquestionable fact, it would not automatically follow that God isn't there. They also seem unaware that there are a significant number of highly-qualified scientists who do not believe in Evolution.
6) Intellectual laziness. Many people have simply never delved into the subject, to see if God's existence can be convincingly demonstrated.
7) Stereotyping. People call us "religious nuts," "Bible-thumpers," etc.; so the average layperson may get a negative feeling toward all belief, not realizing that he/she should first look into the existence of God in principle, before necessarily looking into religion.
Those wishing to look for further evidence may find these links useful:Is there evidence against Evolution
God's wisdom seen in His creations
Atheists are not the only people who do not believe in the Christian God. They share this disbelief with many other, including Buddhists, Hindus and others. Atheists differ in that they neither believe in the Christian God nor any other god.
Whereas agnostics believe we can not know whether God or gods exist, atheists actually believe that God does not exist. In many cases, this is because they have looked at the supposed evidence for God and found it wanting. After all, no one has ever been able to prove that God exists.
Richard Dawkins's birth name is Clinton Richard Dawkins.
Richard Dawkins is 178 cm.
The God Delusion is a book by Richard Dawkins detailing his beliefs on the plausibility of a deity. He offers arguments against theism in his book.
Richard Dawkins was born on March 26, 1941.
Richard Dawkins was born on March 26, 1941.
Richard Dawkins was born the 26th of March, 1941.
Richard Dawkins is still very much alive.
There is no news that confirms a cancer diagnosis for Richard Dawkins.
Richard MacGillivray Dawkins was born in 1871.
Richard MacGillivray Dawkins died in 1955.
Nothing. He is an atheist, and feels very strongly about his beliefs, the same was a Christian, Jew or Miscellaneous believer may feel about their own beliefs.
Richard Dawkins was born in 1941. His birthday is March 26th.