Quote:

Just the bloody , crude evidences can lead people to atheism



Evidence has something to do with it, but there's more to it. Here's Atheism 101:

First, Atheism is very different to Agnosticism. Agnosticism is a rational conclusion, while Atheism is a philosophy or if you want, a religion.

Agnosticism says: God is invisible and inactive, i.e. he does obviously not influence any events in this world. Because there's no difference between an ever-invisible and inactive god, and a nonexistent god, it's irrational to believe in god's existence. I am rational, therefore I do not believe in god.

Atheism says: You came into this world by pure chance. This is a privilege - you can enjoy life - but it's also a responsibility and puts some duties on your shoulder. Those duties include to make good use of what you're given, especially your brain; to not delude yourself; to define a purpose to your life. Inventing a god is an attempt to evade those duties, therefore believing in god is immoral. That's why Atheists don't want to believe in a god.