During the last week I used DF a lot instead of going with my FC. Last time I used it more frequently was weeks ago and I was quite shocked to notice the fleeing trend of popular classes. It seems tanks and also healers leave for the smallest to no reason or directly aim for quick tomes by aborting any dungeon where they start at the beginning. This is anti social and egoistic. I don't want a Game to spy out their players but SE maybe should look deeper into monitoring aborting behaviour.