Consider this page to be perpetually incomplete. Perhaps there is just an outline here waiting to be fleshed out. There’s always more to add, but it was lasted updated on: [8/11/2020]
I am not religious, although I grew up that way (it was your regular-degular nondenominational American Protestant evangelicalism). My worldview holds human flourishing as its standard, and there is no element of the supernatural in this. But I think that religious people can be good, just like non-religious people can be bad. Whether or not I personally like someone turns on their whole character, how they live, and how they think (which level they’re on).
The idea that solidified my apostasy is: infinity is a potential, not a quantity. It cannot be used in relation to any attribute of something that exists. For example, nothing that exists can be “infinitely large” (infinity units big).
Infinity is the unlimited potential for addition or subtraction (and derivatively, multiplication and division). It means that you can keep performing a function as long as you want; it is a category error to use infinity like an integer with respect to measuring any attribute of something. Saying something is infinitely large is like saying that it is red inches long. The concept doesn’t work that way.
One thing I commonly hear in response to this is that “the universe” (meaning the totality of everything) is infinite. Well, “the universe” isn’t a thing. It is a vacuum within which actual things exist. There is no actual thing that is infinitely big.
[Something I’ll add eventually: countably infinite versus uncountably infinite sets. Countably infinite is the infinity of endless addition, and uncountably infinite is the infinity of endless subtraction–which is like Zeno’s dichotomy paradox.]
[Something else to add: how certain approaches to religion are better than others, and why some approaches might be better than some secular alternatives.]
It’s easy to see how this could preclude omnipotence and omniscience, and thereby any standard idea of god.