why so much players have a rush mentality

[Miracle_Diva]

My advice is ignore it and if they want to pull and do your job it's only fair you let them tank to.

So essentially you're gonna let someone else tank because why? Not taking aggro - means not doing your job. Taking aggro takes 1-2 buttons. If you don't want people to do your job, you should probably try and be faster. Also people could pull something accidentally too.