I think you have got to be the youngest person I have ever come across who hates teenagers with such passion. Did you hate other teens this much when you were one?
I didn't like most media starring kids/teens even when I was a kid, at least live action stuff. I never even got through movies like The Goonies as a kid because I couldn't stand movies focused on kids. Stuff like Power Rangers didn't really count because the original team was very much actors in their 20s playing "teenagers", and I could tell the difference. Most animated shows and movies also got a pass with me, because animation is just different when it comes to characters. I also generally gave a pass to superhero stuff, although outside of Robin you didn't get much kid superhero stuff when I was younger. But it wasn't always consistent, because I loathed Batman Beyond and X-Men Evolution as a kid, even though superhero stuff generally got a pass from me in this area. But I loved a lot of cartoons that starred kid characters, like Recess, Dexter's Lab, Ed, Edd & Eddy and the original Teen Titans (which started when I was a young teen).
As I've gotten older, my thoughts on that kind of thing hasn't changed. I still like a bunch of superhero stuff with teen heroes in comics and media, and I'll rewatch old shows like Dexter's Lab and love newer shows like Steven Universe, but I'd rather chew my arm off then have to watch even a minute of something like Stranger Things.
TL;DR: Yes, I couldn't stand 90% of kid/teen characters (at least in live action) even when I was age appropriate, my dislike of them isn't something I've just acquired as a cynical, easily irritated 30 year old
You are the first person I have seen ever to say this..... There are moments when I watch the first movie sometimes and I kind of want this to happen, but if it did happen there would be no need for more movies would there?
Imagine had Cameron actually done that idea, well somewhere in the multiverse there is a version of Terminator where Sarah and Reese is killed and people debate the downer ending till the sun crashes.
I mean, I'm glad it didn't end like that just so we could get the awesome Terminator 2, but that doesn't change the fact that, in the context of watching the first movie, I really hated the characters of Sarah Connor and Kyle Reese and was cheering for the Terminator.