It's really, really annoyed me too, so, yeah.
Firstly, what do they believe? They believe (Atheistic Evolutionists) that the universe evolved, over billions of years, into what we have today. They say they can prove it, and some spend their whole lives trying to prove it, but they tend to get more questions than they get answers. They say our lives were just an 'evolved accident', a life without a purpose, making us as innate as a bag of rocks.
Now, most of them grew up in, or have a family. Most of them would love their families and want to protect them, right? But why? I mean, if you believe we evolved from rocks, what makes your family worth more than a bag of rocks. 'Oh no! My child's sick and could die!' - Why would you care if he's dying? He's just as innate as a bag of rocks, isn't he? Evolutionists? Then why do you find it so hard to not care for them

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But at the end of the day, if we evolved from a bag of rocks, our DNA could not be as complicated as 3 BILLION characters PER CELL, and if that isn't enough for you, multiply that by 50 TRILLION, and that's approximately how many cells are in your body, filled with 3 BILLION characters of code each. 500 THOUSAND of those cells are replaced every 3 seconds, meaning that we have completely different cells to what we had 7 years ago.
This alone, this is way too complicated to happen by chance. Surely there must be a God, an eternal being, a perfect designer. The universe has a beginning, and therefore the 'big bang' (as most evolutionists would say that happened) was near the beginning, but it doesn't show how those cells and rocks got there in the first place.. (major derp)
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So, evolutionists, atheists, why would you care if all your friends were brutally murdered, they are just as meaningless as a bag of rocks, right? Unless, God does exist, therefore they have meaning, and this world was not an 'accident', but was part of a big plan, surely this sounds a lot better, and a lot more 'logical' (if you would) than however many cells exist in the world today with however many gazillion lines of code each being pure chance?