Pulling why?

[winsock]

OP: Because there is a small subset of the community that sees you as being there for their enjoyment. They do not care for your experience. Happens sometimes when you are pulling wall to wall too, so its not going to stop completely even when you have more experience. A DPS will decide to blow all their cooldowns during the pull or a player with an 25yalm insta will pull in front of you just cause they can outrange you for example. As you get better at tanking, you'll see it happen less, and even when it does occur, it's more of a minor annoyance than anything else.

If you ever want to have fun with it, know that it's usually a double standard:

It's a team effort!
Don't take all the initial aggro during a w2w! Save some for your team members!
If a healer is helping you pull, make sure you use clemency whenever possible to help them heal and return the favor!
If a dps is helping you pull, be sure you let them know that you're helping them as well by telling them you did more dmg than they did!
Your party members will thank you for your efforts, help, and consideration!

But ya, it's not going to go away if you want to pug. If it really starts to frustrate you, find good people to run with, switch to dps, or even stop playing. A game that's stressing you out isn't worth it. Games are for fun.