Nope, Cata/MoP were my biggest and most fun raiding days.
BC and WoTLK were great for raiding as well, but making 10man give the same loot as 25 man was huge for me. It made my guild go from 25 man to three 10 man groups.
We were a bit on the casual side and having 25 GOOD players was basically impossible. We always had friends who we carried, dead weight. Fun outside raids, but kinda sucked to wipe over and over due to the bottom 10 players.
Having only needing 10-12 of us made us do much better, getting server firsts, being competitive. I had A LOT more fun then. Being a mage in 10 man, I took almost ALL of the "special" roles for many bosses. These were memories that I will always have and felt huge accomplishments in game.
I am now straight casual and only do LFR and play during new content, so that no longer matters to me.