Because changing my favorite spec into a non-ranged spec after it being a ranged spec for nine years for no gain other than "it's different now" is stupid.
I don't want to be in melee range. I'm a ranged and I want to deal with ranged mechanics. That's why I made my character a ranged class. Why not make Warlock or Mage have a melee spec? Or Shadow Priest melee? I'm sure they'd all love having their effective range drastically reduced and not do any extra damage to compensate.