
It's one of the very few original religions to survive. And when I say original religion, I'm talking about the way all cultures start off, before we start wondering what happens after we die. Pixies, sprites, fairies, elves, gremlins, munchkins, brownies - whatever you want to call them, they're what's left over from the original European religions. The Fae, kelpies, the Loch Ness monster (not the dinosaur theory), yadda yadda, are all part of the religions that were there before Christianity and/or the Romans and/or the Greeks, etc, came in and said that no, the people were wrong, it's really like this.
I call it 'unorganized religion,' because it has no texts, no real specifics. It's a part of the culture, shaped by and shaping the culture, something that is just accepted as is without argument because everyone knows that there really are [insert creature].
We all start off with such simple ideas: I got lost becaue I was tricked by a magical creature, the crops are growing well because the earth/sun is happy with us, people who have become nasty or perverted (or something else) are possessed or transformed (or something else) and aren't really human any more, etcetera...
You (the imaginary critic) scoff. No, it's real, and it's everywhere. Whatever you chose to call them, it's the reason why you can't find your pen and you know that you put it right there. It's the reason why the door opens for no reason. It's why, even in the middle of a grey and rainy day, you suddenly feel cheerful. It's why lightening struck your tree and not your neighbor's.
Shinto, quite frankly, doesn't give much of a damn about what happens to you after you die, unless your ghost sticks around to bother people, or you turn into a snake from jealousy or something like that. In the end, it's a very simple thing.
In ElfQuest, Wendy Pini wrote: "Death, when it comes, is neither good nor bad. It merely IS."
Well, these things that happen are somtimes frustrating, sometimes amusing, sometimes annoying, sometimes wonderful, sometimes deadly, sometimes lucky, and so on, but they are ultimately neither good not bad. They merely ARE.
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Now that I've caught my breath...
As far as I can tell, the reason why Japan can have so many religions all peacefully coexisting without much conflict at all, is because none of them are particularly agressive. None of them say anything like 'This is how it is, and if you don't believe what we tell you to you're going to suffer eternal torment.' It's not like monotheistic religions, which tend to take an offensive stance and start wars and things like that. That's what I mean by an agressive religion.
Buddhism looks at the big picture, at the abstract ideas behind what we percieve as the world and life and things like that. However, unlike Judaism and its offspring, one of the most important points is that enlightenment must be found by oneself. Nobody can really tell you that that's how things are and you can just accept it and believe in it without question. You find out the truth for yourself. And if you happen to disagree with someone, well, one of you is probably deluded, and you can debate about it, but you won't really find out who was right until, several lifetimes down the road, you become enlightened to the point where you (1) know the truth - at least partially - and (2) remember your past lives.
Shinto I've already talked about, and I'm not going to say anythig more except that it deals with everyday life and is commonly accepted. Doesn't really overlap with Buddhism at all.
Confuscianism is what I know the least about, so I'm feeling my way here, but I think it's primarily philosophy and politics. In other words, you think and postulate and hypothesize and other pleasant stuff like that - again, mostly about life rather than the abstract ideas beyond it, but on a larger scale than Shinto, and it helps you run the country so the monks can go about trying to figure out their own, personal truths.
It works.