As for your argument - I honestly have no idea how many people have committed suicide based on depression due to losing their faith in a deity
That's not really crucial to my argument, as it wasn't really the point I was making, which was just that if you strip away (too much) meaning from somebody's life, they might ask themselves, "What's the point of going on with it all?". You might do a lot more than ask, you might really feel that way. And, this is a perfectly natural reaction. (And, what gives life meaning will depend on the individual) Anyhow, I suspect many more people think about suicide than actually commit suicide, which might be a huge jump for many.
One of the biggest questions we can ask ourselves is what is the meaning of life. Either, you can find an answer for yourself, or you can't. And, if you can't, it's quite natural to ask yourself why you even go on with it all. That's why Watts (quoting another philosopher I can't remember the name of) said the ultimate question of philosophy is whether, or not, to commit suicide.
Anyhow, when it comes to atheism, this is how apply the whole "suicide" thing, i.e. more as a philosophical question. I think anybody that tends towards spirituality will see atheism as rather destitute, as far as meaningful worldviews go, and would question the relative value/meaning of life. Is that really all that surprising?
Such people, I think, have been indoctrinated to believe that happiness, meaning and purpose for their lives can only derive from an external source. Any close examination of the issue quickly reveals that to be false - but some people are quite attached to that position.
I agree, that's a good point. I'm reading Jacque Valles' book Messengers of Deception right now and he gives a similar warning about the UFO sub-culture, as he saw it in the 70s. In a society as spiritually devoid as ours, where many can no longer place their faith in the traditional Western views of God, the UFO sub-culture represents a group that has transferred the "need for the sacred" unto some imagined civilization in the sky. They're still looking for meaning/happiness "out there" from something external to themselves that will "save them" from their daily lives.
Anyhow, the point he makes is that this a naïve view of ufology, specifically, a negative aspect of the nuts-and-bolts view, or what he calls the Extraterrestrial hypothesis. Similarly, it could well be argued the position you state above is a naïve view of religion/God.