What makes you think you are an atheist ???
I left religion as a teenager. Religious zealots and a war killed any remnants of belief in any omnipotent caring supreme being
At age 13, I became an atheist when I realized the Bible is just a book of stories written by men. I don't "think" I'm an atheist; I am an atheist.
My smart-alack comebacks to Christians who try to convert me:
"I don't believe in an invisible being that resides somewhere beyond the clouds."
"At age four, I stopped having imaginary friends like Santa Claus, the Tooth Fairy and unseen gods."
This shuts them up. Perfect.
The tooth fairy does not exist? I was hoping for help with the dental bill. Oh well.