“For more than a year in WOTLK I did nothing but raiding and some dailies here and there. I leveled a bit on a few alts and, as all are aware, it cost to support alts sometimes. I did dailies, and LFG quests until the Dungeon finder came along. I did 2 or 3 randoms then logged off if not a raid night. I was bored with the grind of dailies and wanted a change.
By constantly doing quests, you will experience a very different game than if you just level through pure grinding. You'll be out there making a contribution towards the Alliance or the Horde. Doing these quests takes you through the heart of the game's story AND provides the fastest rate of experience. Have fun in World of Warcraft and enjoy developing your hero - your adventures will gain you great reputation amongst the land.