Really SE 40+ kills and no drop?

[Skuld]

It should stay rare, but farming for five hours without a single drop is excessive.

Have u guys ever played FFXI?? 5h are nothing ._.
In ffxi killed Mysticmaker Profblix more than 50 times for the Moldavite, but in the other hand got 3 Macha's Cuffs for the Morrigan's hands the same night.
Here got my Penance after 47 times (I counted them -_-)

Rare items MUST be hard to obtain, what's the point if not?