These kind of topics show the level maturity and common sense of atheists in general 
You mean to say that being an atheist is immature?
Maybe, because like what others said most of the atheist they don't believed in God or they don't had any God in their life.
they are most likely believed what it is in their mind, they are always depending on their knowledge but not in wisdom comes from God above.
90% of people are born into religion. The religion (aka God fantasy) of their parents is driven into their head since very early age.
I was a subject of this mental abuse until about age of 12 when I started asking questions....That was 40+ years ago...
I'm religion free for few decades now :-)
There is no wisdom in the Bible. Bible is a Bronze Age nonsense, written and re-written by countless people.
God is an illusion. All in your head.
Your 'God fantasy' can easily develop into more serious delusion directly affecting your life, eventually leading to schizophrenia once you hear or see 'God'.