They will go home to their family/wife/husband or whatever and not feel guilty because it is their "lucky underwear's fault".

just exactly what i said before, only that a little bit distortioned.
They try to use the stuff that they were using before and they think that they will give them luck by next time.
But when are they going to release that luck doesnt exist and will never exist? It is all about skills and the destiny.
It is funny to see how all those gamblers are always going to lose everything because of a funny night
They could do something more profitable instead of spending all their money on a single night