Rolling Need For Gear You Have No Use For
So maybe I'm just missing something, but I've seen an increase in dungeons and especially ST of people rolling Need on gear they have absolutely no use for. When you have a piece of i120 gear in the slot why are you rolling need for that piece of i100 gear? Sure, you can turn them in for GC seals, but that's a pretty weak reason. Glamour maybe, but I've seen it on belts as well, so that doesn't completely explain it.
I know the entire incentive for me to run ST at this point is to get gear for secondary classes (WHM is my main and I'm well past the gear that drops), but that's becoming harder to do when people just roll need on everything that drops now. Now sure, I could take those jobs in there and roll need as well, but I'd rather have better gear for them first.
So is this just bad etiquette and people are being selfish or is there some legitimate reason for lotting Need on this stuff?