Okay, I'll roll with this. What is that belief based on?
Knowing that people die on a regular basis, correct?
How many people do you observe dying on a regular basis?(that is rhetorical, we don't need to get all morbid)
Have you observed everyone to this point in history die?
Clearly not as I am still here and it would be impossible to observe everyone.
"The reason why I believe all people die is because so many people have died and we are all pretty similar. It's simpler to believe we all die than to think that for some reason, some people are special."
This is based on the Law of Uniformity, which is very important to Forensic science. This law is really more of an assumption that causes in the past are the same as causes now. I am not accusing it of being false, as there is a huge amount of science based on this Law. Point being, since you cannot EMPIRICALLY observe everyone die, it is - while largely based on knowledge and cleary rational - taken on faith. You know all people SHOULD die, but you have a belief based on faith that they all actually do. It's very logical of you to think that way, that's what makes the most sense. But it still requires at least a figurative ounce of faith.
"As for why I'm an atheist, there's no evidence for the existence of a god. If a god did exist and did want me to believe then that god would know exactly what evidence I would need to believe it. I'm not talking about violating my free will. Just like you can provide evidence that you have a $20 bill by showing me it without violating my free will, a god could provide evidence to me that it existed. Yet, that evidence hasn't been found."
Well, I've made this case many times now.
The Law of Causality says every effect needs a cause. If this is not clear to you, it is because you do not want it to be. It is really rather obvious - even David Hume agrees - that nothing arises without a cause.
The General Theory of Relativity says that the universe began with 'the Big Bang'.
The First and Second Laws of Thermodynamics tell us the universe could not be infinite. There is no more energy being created, and all the energy in the universe is gradually becoming less usable. If the universe were infinite, that means that we'd be outta usable energy by now.
Additionally, the very idea of an infinite universe is impossible. Time is finite. It is impossible in the natural world to have an infinite amount of a finite thing. Therefore, it is impossible for time to be infinite. If it were, today would not happen. Because you'd have to go from infinity ago to today. That's basically saying 'infinity + 1'. You'll never get to the 1 because there's infinity before it.
Additionally, the presence of "great galaxy seeds" and Cosmic Background Radiation point to the Big Bang.
All of this tells us that the universe had a beginning. It was CAUSED by something to begin, otherwise it has no reason to begin.
Logic tells us that either
A) nothing caused the universe
or B) something caused the universe
Since nothing is not a cause(it is nothing), it has to be B.
Something caused the universe. Since time and matter are products of the natural world(the universe) and came into being at the big bang, it is logical to say that time and space do not apply as limitations to the cause of the universe, which is by its very nature, supernatural. Therefore, this supernatural force(which I will call "God") is infinite.
Since it is infinite, it does not need a cause and could not logically have one, nothing can come BEFORE infinity.
Additionally, as this supernatural force is infinite, there can only be 1 of it. You can't have 2 infinite things, otherwise they would not be infinite.
Therefore, I submit that the universe EXISTING is evidence that there is a God. Not only that there is A God, but that there can only be ONE God.