Here is a webpage that has a long list of suicide causes. I don't see God on the list. Of course, I know from personal experience that losing faith in God can make a person feel foolish, angry, depressed, etc. So indirectly, I suppose faith in God is also a cause. The very last item is "loss of hope", and I suppose some people might feel a loss of hope when they lose the false security of religious beliefs.
Quote:The death of a loved one.http://www.suicide.org/suicide-causes.html
A divorce, separation, or breakup of a relationship.
Losing custody of children, or feeling that a child custody decision is not fair.
A serious loss, such as a loss of a job, house, or money.
A serious illness.
A terminal illness.
A serious accident.
Chronic physical pain.
Intense emotional pain.
Loss of hope.
[... (many more but no mention of religion or God)]