Well, that is a thought-provoking question, but I think I have a good answer. We all have our own stories, but I assure you that anyone who is truly faithful in Christ will tell you that they chose it, and it is real.
Now, if you talk to someone who is atheist or agnostic, they will say over and over the words "don't care", "I", and "me". Well, that's because they don't want it to be real, not that they don't think it is. Everyone, whether they realize or say it, know there is something else. Why do you think people are afraid of death? It's the concept that has been placed within all people that there is an absolute, a definite, something beyond our simple knowledge that is worth fearing and worrying about. Even if they tell themselves that there is nothing after the world as we know it, they still fear death. Why? Because they know there is something else, that something beyond their understanding will happen.
Well, if we all know, why do they still say there is nothing after this life, that it's all a scientific coincidental accident? Because they don't want it to be true. Why? Because it gives them an excuse to do whatever they want. Again come the "me" and "I". It's all about me. I can do whatever I want. If this is all a chemical accident as evolution says, there is no absolute truth, no right or wrong, and they can live their life for their own selfish gains. They can do whatever they feel like without facing future consequences. The funny thing is, they usually still have basic morals (eg. don't lie, don't steal, don't murder). Why is that if there is no absolute law? Well, funny thing, we all have not only the concept of an absolute programmed in our heads, but also right and wrong and guilt. Isn't it funny how the two go together? It must be a chemical accident like evolution claims, right? No, it doesn't make sense. Therefore, there must be an absolute, a final law, something else beyond our understanding that sets limits for us. There must be some being greater than our understanding.
Here's a good analogy. Think of a field. You are a little kid. All you want is to play in a big field. The atheists and agnostics say, "Here you go, an infinitely endless field to play in. You can go anywhere you want in this field." The problem is that we all, deep down, want a fence. We want an absolute so we can know where we are. We want to have a sense of importance and reason. With a fence, even if we were on the wrong sideof it, we would be somewhere. Now, we are all on the wrong side, but Jesus says, "I have the key, and I will open the gate and let you back over here if you want me to." Why? Because He loves us! With His unconditional love, we feel important. We feel sure of something. We find that that void within us that we try to fill with earthly things that will corrode and ruin has been filled!
Now, what about other religions? I guarantee you, anyone who has another religion either doesn't take it seriously or still does not feel truly complete. They are trying to fill that hole with ice, which seems solid but eventually melts away. But Jesus fills it with cement, which may seem wet and useless at first but becomes solid and stays. I promise you, Christianity is the only consistent belief that really feels real.
I'm sorry if I got off track and missed the point. I do that sometimes. I hope this was helpful. God bless you!