I don't read as much as I used to, that's for sure.
I read (most) of the first book of what became the "The Expanse" TV series. I've read a bunch of Peter Hamiltons work. The pervasive David Weber slanted Baen Style pulp-military sci fi I enjoy.
I do not patronize "sci-fi" for the sake of sci-fi. Most of the modern movies I avoid. I am very curmudgeonly and "hey, old guy" when it comes to this stuff. I don't see movies for special effects any more, but that doesn't mean I don't appreciate them. Gravity was excellent. Martian was excellent. Jungle Book was outstanding. I'm not chomping at the bit for the new Alien installment. I'm stone cold to the Avatar sequels. Enjoyed both recent SW movies.
As a general rule I avoid comic book movies, specifically the "well known, DC/Marvel-verse" costumed hero stories. Most don't translate well to film, for me. I saw "Capt. America - Civil War" and, eh. "Guardians of the Galaxy" was good fun, I look forward to #2. But seeing Thor just standing in a intersection holding his hammer, frankly, looks pretty silly.
"The Expanse" is excellent on TV. I'm enjoying "Colony" on TV as well (which is borderline Sci-Fi). "Dark Matter" did not grab me. For some reason I continue to watch "The Walking Dead", I think it's just pure momentum, frankly (and its apocalyptic horror, not sci-fi). First Season of Mr. Robot was good, second season was "Oh, that was the finale?". We'll see what happens with the 3rd season. Geek hackery is what was sci-fi and is now present day.
I can't stand Big Bang Theory.
Back in the day, "sci fi" was marginal in media. So, one was inclined to consume everything they could find. Now, we're just saturated with it, and can choose to be much more selective. Plus we have old media that we can go back to. I'll re-watch LoTR several times a year (not so much The Hobbit).
Here we are, old creaky guys, talking about a 40 year old sci-fi RPG. We've all seen the graying of our community. What was once a "young guys" club has just aged to what we have today. Many have not "out grown" gaming.
We haven't "out grown" our music either. There will be guys waving their walkers and canes in the air at the next concert of my favorite Progressive Metal band.
There's a great concept in the movie "Big", where someone finally realizes that Tom Hanks character is, indeed, a child inside a mans body when they figured out the fabulously expensive toy he was designing would mostly appeal to children who happened to have the free money to pay the high price for the toy -- i.e. someone with the disposable income of a mid-30's executive. Looking at the prices for things today, we see the same thing.
$100 for that huge box of Ogre. $100 for a $3 game. Yes, its an impressive presentation but, really. It's Ogre. Clearly that game was not marketed to the same demographic the early game was.
I am out of touch in terms of anime', manga, etc. Anime' alludes me. Ghost in the shell movie coming out. "Eh". Last time I walked in to a Comic Book store, it was all middle aged men with beards, like the guys on "Comic Book Men".
They seem to be attracting new blood, I don't see the genre's dying but... maybe. Who knows. Sci fi can clearly span generations, but how much of it? People lament "why can't they make movies like the old days". Well, they do make movies like the old days. They made lots and lots and lots of crummy, forgettable movies in the "old days". Only the real gems survive. Same with Sci Fi. We remember the giants, but pretty sure there were more than, say, 30-50 books published in the golden age. Most of it, by definition, forgettable.
So, in that sense, yes, Sci Fi is targeted at teenage boys. Simply because that's who you want fueling the new wave. Get them engaged, and then tap their disposable income when they're in their 20's before they start lamenting that they don't write stuff "like the old days" again.