First i agree the study is a load of nonsense, there can be no correlation between the two.
On the subject of is there a God, its my belief there is although i am not religious....However after watching my first wife suffer slowly from being ill with cancer then ending up dead, it really shakes ones faith in anything.
Going to the Philippines, observing the people there and their faith in GOD has made me believe how worthwhile it is having faith in something, particularly when all else fails as is often the case in some areas of the Philippines (i am talking disasters etc).
Since my wife has been here i have been attending, on occasion, church( a catholic church) although i am C of E. I must say i have found this quite enjoyable although some parts of the services are still a complete mystery.
I can believe that atheists could be more prone to committing suicide and for me really the jury is still out on whether there is a GOD. I like to think there is and am sometimes envious of peoples unshakeable faith in GOD. Having that belief IMHO and faith can only be good. Can you say the same for Atheism?