I've always advocated for large servers so it feels like you're immersed in a living world and encouraged to interact with the people around you.
However, I have spent the last week and half trying to quest in Arathi, Stranglethorn, and Badlands and it has been absolutely miserable. Truly, truly awful. Every quest mob is dead. A sea of mob corpses as far as the game will load. There's so many people everywhere. I have to sit around and wait for a mob to spawn in my face while spamming my tag macro.
I've tried evenings, afternoons, nights, and mornings. Weekdays and weekends. I just want to quest. I love questing. It's a core part of the game. I can't do dungeon spam.
Badlands and Arathi a

