I think if you cheat to better your own personal enjoyment of a game, that’s fine. If your cheating however, negatively effects someone else in a multiplayer environment (including leader boards and achievements) then it’s bad.

YUSSSS!

So... at what point does Blizzard say, “There are over 150,000 people wanting to play vanilla WoW so we decided it was totally worth the cost and effort to make a classic server.”