I don't converse in talking points, let alone somebody else's. I'm only vaguely aware of what Reddit is and as far as I remember have never visited it. I never have, and never will, have a Facebook account. Do you? If so, you are a terrible, annoying, progressive, yoga loving vegan hipster who takes selfies while they crossfit...apparently. What was that you were saying about speaking in broad generalities?
That's an incredibly tired argument that resonates only with people who have never experienced anything other than what they were brought up on. You should know that since you're not religious, but maybe you're just a very self aware exception to the rule that sees yourself as inherently negative.
I know that he's recently found significant popularity so I hesitate to mention him lest I be branded a bandwagoner, but I defy you to watch an interview with Neil Degrasse Tyson and tell me he has an inherently negative perspective on life.
You want a narrowly focused counter-argument to faith? Here: The foundational tale behind the Mormon faith suggests that indigenous North American peoples were a transplanted Jewish tribe that traveled here by boat, and therefore their descendants should have DNA in that lineage. Modern DNA testing has shown that not to be the case, and that indigenous American's originated exactly from where every other anthropological indicator says they did - Northern Asia. How does a Mormon rectify that in their head? Well, the church goes to great lengths to ensure they never know that, but if they stumble upon it, it usually ends up with "god changed the evidence to test your faith" or some such nonsense. You can't trust science in this one instance despite the fact that you trust it every time you use your cellphone or toss your child over your head and don't expect them to fly off into the vacuum of space. What can a logical argument possibly accomplish with a person willing to swill that down? Very little. So you change the environment by refusing to allow that stuff to go unabated and wait. Over time, as joe1234 mentioned, it becomes more acceptable to call that kind of thought out for what it is.
And let me be clear. Mormonism is no more or less crazy than any other religion out there, this is just an easy example to demonstrate how futile it is to 'convert' individuals with directed logical argument.
I'd prefer that the people in this world put in the position to decide when to launch enough nuclear warheads to destroy the Earth multiple times over not base their actions on this kind of thing, but that's just me. And yes, I am aware that sadly I'm in the minority.