this is the problem with any popped content. Ideally, if a group goes together to do multiple attempts at x it should be that all pops are consumed, whether you choose to use it come your turn or not. That would end the whiney puss-bags that just quit when they find out the drop isn't theirs no matter who's pop it's from.

simple answer, if you commit to the runs with a rule on drops for the group then you are commited. quit before the runs are done and yeah, you're an ass.