I think what you have is a problem with your approach to the game. You're seemingly incapable of playing it for fun. Just putting on a movie, playing for an hour or two, doing a quest and a half and logging out again can be so relaxing, especially if you don't have the "gotta finish all my emissaries before bedtime or I'll miss out on this and that"-thing going on.
Classic is the very definition of a slow burner. If you try to rush things you'll inevitably be frustrated. The road is long and arduous but everyone can get there in the end. With retail, if you don't log in every day, you'll miss out on stuff every day.
Consider the difference: