Glamour.

Example: all the new Bard gear in dungeons is way below ilvl for me, but I really want to look like a cowboy, so I'll need it so hard.
If you want it, go on that job/role.

I've been healing EX roulette solely because I needed the upgrade body piece, as an actual upgrade, but of course others could need on it if I wasn't healing. Is that fine? Sure, they were the ones healing. So instead I healed to make sure I got it. (And after about 500000 runs I finally did...)