Personally, I spent 2000s first in high-school and then in Uni gaming on my parent's desktop and later my first laptop without a discrete GPU. I played some amazing games during this decade: Deus Ex, Vampire: the Masquerade - Bloodlines, The Witcher, S.T.A.L.K.E.R., Cossacks, the SpellForce games, etc.
However, early on in 2010s I built my first PC. I've played a lot more games, including from previous decades. I was able to take full advantage of Steam sales to build up an amazing library, and then GOG re-introduced me to most of the games of my childhood again, but in a far more convenient digital format. The sheer variety of genres I've played in the last decade is nothing compared to my teens/early 20s when I was primarily an RTS junkie with a budding interest in immersive sims/RPGs (I started with Deus Ex, so my standards were always set low for graphics, but high for interesting gameplay).
If I had to pick a decade, I can't really analyze them "properly", because I nearly never played the games close to their actual release date. In terms of my experiences, 2010s is a better decade. But I'd be hard-pressed to say which games I played more there (I didn't play Half-Life games until like mid 2010s, either).
