It would have been worse if it was now items exploding at ungodly levels off of monsters. That would have required a rollback of some level. Be glad it was only exp.
If Arwoo said it ain't happening, then it ain't and you spent 20k NX on a gamble, and lost. That's the consequence of gambling, you might actually lose.
30 minutes is more than enough time to get a rare drop like the Black Bean Mark, Dominator Pendant, etc. that are total pains in the rear to get to drop at all.
Choose your words more carefully before you realize that rollbacks are not always good things. Besides it only affected EXP, it's not like every monster way exploding items everywhere... get real guys.
