The only game I've found in the past few years that made me really feel like I did when I was 8-17 is Divinity Original Sin 2. It's Baldur's Gate, but honestly better (BG hasn't aged amazingly if you really go back and play it. It's good, but we've learned a lot in 20 years). And the multiplayer is amazing, and lets you feel like you're playing AD&D with friends.
There are wonderful games being made and I even found new titles to call my favorites as the years go by. I do not at all believe games are getting worse.
That being said, there are a lot more games now and there's less hard curation, and some genres have shifted (RTS and classic style MMORPGs are both dormant atm).
The Talos Principle — Basically Portal but... different. Physics, timing, & world-affecting-zappy-device puzzles. No actual portals but it's pretty similar. A "there's more going on" story. Quite good.
The Witness — Myst-like I guess? In that you're exploring an island and solving puzzles and piecing together a story, kinda. But the puzzles are all variations on one sort. Elements get added, things get weird, lateral thinking becomes necessary. It's good.
Edit: Just bought Talos for the PS4! Once again, thanks! When I'm done with it, I'll check out Witness.
Has there ever been a time of the "promise of a game I will actually enjoy"?
Back in the day all you had was rare magazine articles, and one wall of a Toys R Us with flaps consisting of the front of the box on one side and the back of the box on the other.
I'm not sure I see that as preferable to the modern situation.