Your whole post misses one clear point: There is a difference between an atheist and a professing atheist. Also, there is a difference between a "Christian" and a professing "Christian". I will add that having worked in prison ministry I have found that many entered prison as professing atheists/agnostics but became Christian (and Muslim for that matter) while in prison.
Fact is, we are all spiritually "sick". The difference between a Christian and a non-Christian is that a Christian at least KNOWS he is sick.
yea, who want to go infront of the parole board saying "I'm a f'n atheist. So What". The question is how many stay Christians after they get out?