There are guilds that want server/world firsts.
Its a fact, you also play MMOs to show off how much "bettar" you are than people aren't you.
Saying "I don't do that!" just shows you wanting to be "bettar" than even the min-maxers.
>.>
On a serious note, our MT is a Jugg, and we're in Nightmare, doing fine. Its doable, specially since AOE threat has no merit in current encounters.
However, should add even a single encounter that requires AOE tanking, even successful Juggs would be replaced. This happened in WoW and Rogue's in cata, and DKs as well, low dps, low survivability, and no other benefit to a class does make it difficult.