Every time something like this happens, I consider leaving daggerspine behind. Once it even made me quit the game. The addition of the death knight actually makes this more likely as I wouldn't have to "start completely over", even though with character transfers, I could be back up and running on a new server with minimal effort. Thats not what this post is about.
PvP ruins Wow for me. I love my guildies, I love playing different characters. I desperately despise people basically determining what I can and cannot do in the game by sheer assholishness. This morning, I was attempting to do dailies on Quel'danas. I never did them before WotLK precisely for this reason, I would see a ton of red names, know they were going to gank the shit out of me and decide it wasn't worth the bother. By that decision alone, PvP or really the threat of PvP has controlled my actions.
Some might say "get better at PvP then". Its not that simple. First, there will always be someone bigger better faster. No amount of skill can prevent being ganked. My class probably plays a roll in it. I enjoy paladins, a LOT. Not retribution either, I like protection. Great in PvE, great tanks, great for AoE grinding. 90% of the time, worthless in PvP. No range, no ability to close. Lastly, I am playing Wow on a 5 year old computer that has had no extra work besides a RAM upgrade. I'm sure my amazing hardware doesn't help.
Basically, there are only 3 solutions to avoid this situation. Option A, only quest with a "buddy". Not particularly viable, everyone I play with has their own agendas. Option B, quest only in "friendly" zones. Well, that only works up until about level 20. Option C, leave and set up shop on a PvE server.
I love my guildies, I don't want to leave, but it is starting to look like the only viable option.