That's a sure fire way to know someone sucks. Other unacceptable death knight names include Arthas and all variations thereof.
pvp has less whiny babies of herd mentality
people in raids will just abandon the whole thing if you die on trash rather than learning from the mistake and trying again so i don't see any point in doing raids
and i like dueling people a lot that's my main reason i want pvp gear
"PvE > PvP"
PvE eventually runs out of content or grows repetitive. How many times can you repeat the same cinematic group quest before you get bored? The enemies follow a predictable script, either general tactics or phases where they (typically) use the same attacks and possess the same passives, an enrage timer to promote the party to go faster, fire to not stand in... when a full party wipes the reasons why are predictable. There's even mods and websites to prepare players for every step of it so that very little remains unpredictable.
PvP's main repetition is it's maps, but the opponents actually understand how your class works, fights you with that in mind in their own way, degrees of variation in tactics far less predictable than a CPU. People are just a more satisfying foe, as even how your previous fight was can change how they'll respond to the next one, and any mistakes made are authentic instead of programmed.
"how the hell do you even kill a pally"
Persistence.