I can't speak for everyone, but No. WoW was never my favorite game, although I did have a lot of fun through the years I played. But the main reason I spent so many endless hours and nights grinding away was because I had to if I wanted to level up and make money for gear n all that. WoW demanded that you invest your life to excel in the game (before recent expansions allowed free max level boosts and dumbed the game down)
WoW would be on my Top 5 Favorites list, but it'd be #4 or #5 lol