Spoilers don't exist.
I'm not sure what kind of shows you watch, but there are essentially two kinds of show which can be severely damaged by spoilers - those based on foreshadowed twists and those where part of the fun is working out what is going on before it's fully revealed. Removing the "lightning bolt" moment when a twist which explains everything is revealed or the fun of trying to work out what's happening behind the scenes can just remove part of the experience the author intended to create.
...I guess I can sometimes go for character spoilers (IE who's gonna be introduced in the next installment) when I'm impatient but that doesn't really spoil much.
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If the the Climax for a given event is what only drives when you're consuming media, then sure, it's pretty delicate. But even for show that do have foreshadowing, and wanting the viewer to guess what's going to happen.
Then so what?
Any media is more then about its payout's at the end. The pay outs are very small part of the story overall.
The journey getting to these payouts are the much larger part of the story, and that were most of the story is. That is where most of your enjoyment, and investment lies within.
Its traveling with the story, is where you're going to grow attach to the characters, grow attach to the universe and grow attach to the story.
If your story can't keep you engage with it's journey then the media you're consuming is horribly written.
And shows with foreshadowing are immensely better when rewatching, when you know what's going to happen. You're going to notice so much more out of the story. You're going to get all these small surprises as you watch it, /because/ you know what's going to happen.
Not only that, but knowing what's going to happen can and will reshape how you see characters.
FLCL, is one of my favorite Anime's of all time. I fucking love and adore the shit out of FLCL. And it's filled with foreshadowing and minutia of detail in each episode. I've rewatch that series well over a score, and I still find something new that I didn't notice before. And it was completely ruined for me, if you wanna indulge in the infantile thing of 'Spoilers'.
Totally knew what Atomsk, the big fight, the relationships, what the robot sorta mean, how it's a coming of age story. All that jazz. I watched it sorta over the shoulder as my other friend saw it, and I watch it on my own year's later. And there also Trigun. My first episode, was it's last.
Take, Snape from Harry Potter. After Book Seven/Movie 8, you now have a completely different character then what you get from going through book 1-6. What about Dumbledore? You see Dumbledore in a very different light at the end of the series.
And none of that get's ruined because you get 'spoiled'. Getting told that Snake is really the good guy, doesn't ruin anything. Because /you/ still get to read it, and you still get to have your own take on it. You still get to have your own experience with it.
For my personal taste, I prefer media that's serial, over episodic. I also prefer media that has continuity and consequences from previous installments. I prefer media that has a beginning middle and end. My current big series is Young Justice. (My other two right now happen to episodic. Archer and Bob's Burger. Archer though has a continuity between episodes that I enjoy.)