Why not deism?

[Inqwizitor]

That article reminds me the Kantian phenomena/noumena distinction. We can see some things, but we don't know the intrinsic nature of things.

I'm curious how something that necessarily exists is in line with naturalism? Is that like the block theory of the universe?

@BrianSoddingBoru4 — what's the KSA?

Feel free to look up modal realism and read a bit on it (if you haven't). The universe/cosmos exists necessarily if you accept the supports for modal realism are true and therefore modal realism is true. If you accept that, then there is no possible world in which not all possible worlds are actual.

But even if you don't go along with modal realism, I don't see why something about the universe cannot exist necessarily and from which all else in existence stems from.

I've read some Leibniz and Plantinga, and the rest is Wikipedia. :-) So all possible worlds exist. This would seem to go way beyond naturalism unless every possible world is causally independent of every other possible world. In that case, we must account for existential causality in each possible world. If something is a causally necessary existent in a possible world, then all causally necessary existents are actual. But then we are just pushing contingency to all possible worlds — what is causally necessary in one world is not causally necessary in another. Wouldn't there still need to be something metaphysically necessary to actualize all possible worlds?

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Deism, is the inability to accept or understand that natural processes happen naturally.

It would be similar to thinking that mechanical processes need some kind of natural process in order for it to move.

A car moving down the street is being pulled by several invisible, intangible horses. An airplane achieves flight because many invisible, intangible birds pull it into the air.

Deism puts something in front of a natural process because people don't understand the nature of nature.

I think one motive for deism is an objection to the "brute fact" idea. Nature is, just because it is. The rational mind looks for the explanation for things, and is motivated by the desire for reasonable explanations.