I'm like Welu in that I like to drop into things COMPLETELY cold.
This applies less to movies because I'd only be using a couple of hours of my life, so I might be interested in the setup so that I know whether I want to see it.
However broadly speaking, and with computer games especially, if it's something I already know I want to play - say, when the next Fallout game gets announced - I don't want to know
ANYTHING. I want to enter any piece of art with absolutely no information so I can experience it purely, freshly as the artist intended. Bioshock: Infinite would have been a verrrry different game if I had entered it with any kind of knowledge of what transpired. In fact that also applies to the previous two, especially the first one.
These days, I am so concerned with the purity of the art that I often don't even want to hear the singles that trail albums I'm interested in, because I want to actually have the experience as it was designed. Obviously not everyone these days constructs an album as an experience, but many of my favourite artists do.
Now, this aversion to any information is largely unique to me, and I get that. But I don't think being pissed off when someone tells you a plot point of something is unreasonable. Enjoying the twists and enjoying the storytelling are not mutually exclusive. That's why I enjoy rewatching things.
To go back to my Darth Vader example from my original post - Empire is a great movie, and the first time, that plot point will be an absolute gut punch. But then you can watch the movie again, get more from the storytelling and see where it was telegraphed, if you missed anything, etc.
If you can still find something enjoyable when you've had it spoiled, then good on you, but if I am watching anything remotely plot driven a spoiler will wreck something for me. Otherwise why even watch it in order?
It's the same reason I can't enjoy prequels. I have no interest in Better Call Saul.
I already know that Mike is dead. So I have no interest in any 'new' events that transpired before the main show.
I already know where these characters end, and while I may be interested in where they began, there's no jeopardy whatsoever.