The problem is when you're playing and someone leaves at the boss just because they were there for xp. Then you're left with 1 less person to kill boss AND CAN'T ASK FOR BACKUP!! Then 1 person dies, ragequits, then others quickly leave too.. Then you're stranded alone unable to kill a boss and have to start map over again.
Please return things how they were. I don't mind miner mooches as long as they help