I see the words "running every quests once would take far to long when tr ing" and I understand them individually but together in this order I can't make heads or tails of it. To me, tring is the game; running everything once (or twice to unlock elite) and done is the full game experience for me.
Epic stuff is quite fun, but I have guild raids for that and plenty of epic alts to bring to them. Most of my game time is spent tring because that's where I think the game shines. Skipping content (either by farming, stoning, or whatever) runs completely counter to how I enjoy the game.