Making serialized cards the norm and not the exception will gradually detract from the excitement they bring to the game
It doesn't copy whether that permanent is tapped or untapped, whether it has any counters on it or Auras attached to it, or any noncopy effects that have changed its power, toughness, types, color, and so on
If you're behind, you can just reset the entire board back to the beginning of time
Your opponent could be running aggro and have you outranked in terms of creatures, or in the late game they might just have too many strong ones out there
It can still be reused after a blink because it gets its -1/-1 counter back
It comes with incredible artwork, so itll likely be worth a decent chunk more than the roughly $100 the normal printings come in