I know, kind of philosophical, but here we go.
I just started playing retail WoW when I found out that in order to enjoy a story of an expansion, you need to do things like Raids and Dungeons in that expansion. However, as we all know, not many people do Raids and Dungeons in old xpacs. Instead, all players are ushered into focusing in the endgame content, where it all matters. Even though we can experience old xpacs contents, it is just for zones, questing, and leveling.
So my question is this: is the ultimate goal of WoW always the endgame content of current expansion? I really want to enjoy the Raids and Dungeons to experience the old stories (which I heard are INCREDIBLE, especially in TBC and WotLK), do I need to find specific guilds for that? What are WoW players chasing after in the game in each expansion?
Please enlighten me as I am reconsidering whether I should invest my time in this game or not, I am really confused about the system in this game. Unlike GW2, where the story is separated from other instances, so everybody enjoy the same story journey.