It looks like I'm in the small category of people who like RNG for drops. Whenever I know I am going to get an item, I have very little motivation to actually go out and do it. Its a lot like how I am with dating; If I know I can get the girl, there is no sense of accomplishment and thus no desire to pursue. I like having to work for things instead of being guaranteed to receive them if I spend an hour doing a dungeon.