Better question is why wouldn't you carry at Church?!
Because...
my crystal ball ain't working
a policeman is kinda heavy
a policeman won't fit nicely in my holster like my XDm does
bibles don't stop bullets or crazies
it is my job to protect my family and I can't trust that to someone else
sometimes gun free zones aren't
ZOMBIES!!
Goathead and pick one.
Because I can choose not to.
I'm allowed to believe the the church is a place of sanctuary. I dont carry at church out of my own convictions but have absolutely no problem with anyone that wants to. I wont step foot outside my house without a weapon on me but the one place I dont carry (unless forbidden by law) is a church.
Sadly, that is usually how most have to become enlightened to Self Defense...Cause like your story shows, violence happens everywhere. One of my pastors a while back was the last to leave the church and a man attempted to rob him and stabbed my pastor 16 times. Guy nearly bled to death. After that he was a strong advocate of carrying a gun for self defense.