Why do people challenge belief in GOD? When they can challenge belief in the SOUL and SPIRITUALITY?

I have a hard time understanding why people argue for atheism in this time yet won't mention their disbelief in the soul unless it comes up in conversation. Most people I know KNOW there is no god... to me today's problem is the belief in the SOUL. I even know many agnostics and even atheists ACTUALLY claim to believe in souls!…