Imagine with me a world, a world much like the world of the World of Warcraft which we all know and love and/or hate. But imagine that in this world, you have every ability and a full talent set at level 1. And you can raid. Essentially level 1 is level 80. But you can still level. There is no PvP and all NPCs scale to your level.
At level 2 you will gain stats. But raids are designed to scale perfectly with level, so there's a level 1 Naxx and a level 2 Naxx and the difficulty between them, damage, health, adds, are all exactly in proportion to the increase from the level. The gear is stronger as well, but also in proportion, so no matter what you do, level 1 will be just as easy or hard as any other level.
A level one can see exactly the same content. The gear they get is exactly as powerful relative to their enemies. But...
But the higher level you go, the more stats you get. A level 80 might be a hundred times more powerful than a level 1. But they'll never meet in battle and never raid together.
Would people stick with level one to quickly see the content or would they level up for stats which give no benefit?