I've known a few suicides, and none of them were religious. I think you talk a lot of BS.
Religious people have notoriously covered up suicides, as it is considered a sin and brings shame on the family. Let's take America for example, that has a predominant Religious population, let's say 80% believe in GOD, just to be conservative.. DO you really think that all the suicides are by the atheist minority. Such a statistical anomaly would have been noticed long ago.
And I would argue the reason religious people or people of faith kill themselves far more often than people of no faith is because religion gives people false hope and encourages them to believe untruths, it takes an enormous amount of effort to maintain faith and religious untruths when overwhelming evidence to the contrary is thrown at you from every direction, something has to give. The fact they turn to faith in the first place is an indication of their fragility and inability to accept life on it's own terms.
Atheists on the other hand have a more realistic perspective, they comprise a stronger constitution that isn't propped up by religious propaganda and nonsense to comfort them, they realise there is just one go at this, they don't create false heavens to comfort them in this life, they simply make the best of the one and only life they will ever have.
The fact is Religious Nutters like to blame everything on some false belief that faith is disappearing, the fact is atheists and people of no faith have always been a tiny minority. The majority of the world are religious or faith based of some sort and judging by the constant state of tyranny and warfare humanity has constantly been involved in, it comes as no surprise the majority are and have always been religious. I hate to break it to you, but lack of faith isn't the problem, but faith is and always has been. Faith prevents people from utilising logic and reasoning, and any world where the majority of people abandon reasoning and logic is well, pretty much like the fucked up world you see before you.