I guess mine would be either 2014 or now.
In 2014 I had taken a long break from gaming, many years, and came back into it with a rush, and there were all these amazing games that I had never played (or even heard of) and I got to play them all one after another, like Half-Life 1 and 2, Portal 1 and 2, all the Mass Effects...
As for now, I've had a great time this year with some of my favorite games ever, plus some sequels coming out in the next 6 months that I can't wait for. In the last year, I've played Conan Exiles, Satisfactory, both Subnautica games, Craftopia, Farming Sim 19, Car Mechanic Simulator 19 and 21, Forza Horizon 3, 4 and 5 plus Motorsport. All of these are among my favorite games of all time, and I can see myself playing them for a long time to come. Then you have sequels coming up to some of my favorite games, like Total War Warhammer 3 (put almost 700 hours in the 2nd one), Farming Simulator 22 (comes out next week), Ark 2, Sons of the Forest, and Dying Light 2. And some new games like Elden Ring, Calisto Protocol, etc. I really can't ask for more.