As soon as it's absolutely possible to level a character from WoW utilizing different zones (and therefore having different experiences), people who have leveled 4-12 alts have since worn the blossom off the metaphorical increased. Players have pushed Blizzard to make leveling more easy and quicker. If the overwhelming majority of individuals are playing in the endgame, making individuals run a bunch of dungeons to hit maximum level in a decent quantity of time just encourages them to quit playing entirely. All of the changes Blizzard has made to leveling up.
It makes great sense, but the end result is a negative experience. Thus far there's virtually no challenge in Retail WoW. Classic WoW is not particularly hard by default, however you can perform with it in a manner that'll extend your personal abilities. The availability of buffs and the difficulty of content that is higher-level encourage grouping in a way that Retail does not require.
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