“Why should I believe in a god?”
(
J3nna, this post is for you.)
Why should we believe in the asteroid belt? We gain no benefit from so believing, not most of us anyway. But if we are interested in the world, in the universe, in knowledge, or if we are interested in our relationship with the universe -
or with God if there is one, especially if that relationship may affect our life and happiness - then that is a
motivation to figure out whether there really is an asteroid belt or a God.
Notice that treating others kindly is derived from the belief that one ought to.
Yes, even those who claim to believe in “nothing”, do in fact believe in many things, even though they are unable to justify their beliefs - such as “It’s nice to be nice.” Everybody believes in something. Specifically regarding ultimate questions, such as “Why was I born?” “What happens when I die?” It’s up to each one to decide how to answer those questions. Some accept a belief in God, some a religion without a God, some a religion with a God, and some neither a religion nor a god. Some people don’t care about it. “No sweat” for them. But if a person cares about having a correct belief, then he would “study up on it.”
Two arguments make the most sense to me:
- The need for a “first cause” itself/Himself uncaused. Even if our universe is an infinite chain of causes, the chain of causes still requires a cause. It can’t be an infinite chain of causes in any case, because of the necessity of having one thing follow the next would mean that there isn’t enough time for us to be at this particular point in the chain.
That was the one that for the first time in my life, gave me confidence that there was a God, a confidence that was more than just “faith” or “thinking there is a God,” but being certain (mostly certain) that there is a God of some sort. Later reading in “Thomistic Metaphysics” “fleshed”

it out for me. C.S. Lewis’ quote that Josh provided is also a recurring piece of evidence which to me seems irrefutable. Also, Josh’ quote from John Lennox about the
rationality of the universe.
Now for the
what of the “why?” Many people insist there is no God. They reason that “there is no proof”, which is a ridiculous statement unless they themselves are God and know all proofs and all attempted proofs. Besides, most of those who deny the existence of God are neither sufficiently well read, nor inclined to actual consideration of the issue more than a perfunctory “Nah.” If I want to be a nuclear engineer, I’ll need to spend a few years in intense study. If I want to be a good spouse and parent, I’ll need to devote a lot of time and energy. If I want to train my dog to roll over, I’ll have to learn how to train dogs, spend every day with him, be patient over the course of time, and change my method from time to time in order to ensure I am on the right track for reaching my goal. But if someone offers to tell me “a new truth”, or to give me “proof that there is a God,” how much time will I allow for that? If the person is lucky, about three minutes. It is he who will have to work long and hard to convince me to listen to the ultimate truth of the universe.
Philosophically speaking, “God” is not 2+2. Although “God” is “simple” in theological terms, in the way we conceive of Him, there is a great complexity. It takes time, effort, lots of learning (reading and listening) to unravel that complexity, understand the parts, and picture the whole. A person who wants to know if there is a God is in the position of a person who wants to be a nuclear scientists, or an astronaut, or a farmer, or a dog-trainer, or a spouse or parent, or just a truly good person. He will have to devote himself to open-minded consideration, read a lot, study, and if there’s a possibility that there is a God, and if there is a possibility that we can only truly know that there is a God if we pray to Him, then he will have to consider praying to God, as well.
A number of people I know - they review books they’ve never read. People who do not believe in God review books they have never read, and criticize reviews that were made on those books. That is dishonest, but non-atheists do it, too. My point is, those people cannot come to a legitimate honest conclusion as to whether there is a God or not, and whether or not it is useful to believe in God if there is one. The first step for an honest person would be to actually look. These people won’t do it. And I admit, at least in my case it was not easy. Oh, yes, opening a book has always been easy. But reading it to the end, that got hard at times.
An easy to read, enjoyable book that addresses this question is Keith Ward’s Why There Almost Certainly Is a God. I have not read his The Evidence for God, but it may be useful considering how it sounds like it may have echoes - or pre-echoes of the next book i would suggest, Robert J. Spitzer’s New Proofs for the Existence of God: Contributions of Contemporary Physics and Philosophy