If I'm not mistaken, infiniting items removes them from the drop table so there's an incentive to do it. Except cursed items since they are forced upon you.also is good to try to infinite items, check on your quest list (novice for starters) for prize item, that will be your reward once you reach the end, there is no need to kill everyone.. once you have 4 of same uncursed items, they go infinite and have them available for all and free to drop if need space to move on