Funny thing how some people say that parser is bad, cuz it will make obvious who is slacking. But it's completely nice to be useless and not wanting to improve and being a burden to any group they join to.
You might not care about how much dps you do, but if you're doing less dps than a healer dungeon after dungeon for a long time you should be punished :\
If game had some kind of rankings for each memeber it would make people want to get higher score and potentially get better.