Because they are seduced by lies:
1 Timothy 4 1The Spirit clearly says that in later times some will abandon the faith and follow deceiving spirits and things taught by demons.
1 Timothy 4 1The Spirit clearly says that in later times some will abandon the faith and follow deceiving spirits and things taught by demons.
Its like saying there was a cookie on the table in the room you entered and then you say there wasn't. Either the cookie was there or it wasn't, but either way we know cookies are real. In the same way ex-Christians (atheists, not all) either experienced God or they didn't, but we know God exists. For them to say it was all a lie means they were delusional, but we know they only lacked intimacy with the Lord (real relationship) and probably experienced more of religion than Jesus.
I know that a believer is secure, according to the word of God. If a person can stop believing is something I am ignorant of... as I do not see how a person can experience something and yet deny its existence. Its like breathing air and yet denying its existence. How can a person be a Christian and then an atheist? They never truly experienced God, sadly. I believe O.S.A.S. for the believer, the one who truly believes in the Gospel. To those who left... its such a hard thing to fathom a true believer departing from the faith. How? Even why? Such a person would be lying to themselves.
It just seems unfathomable.