Why everyone wants do PotD speed run?

[LalaRu]

With higher floors (61+) you'll find more people going after silver chests.

Correct! Given the exp/hour rate, go past floor 60 have sense if you need unlock the Kinna weapon (you need do floor 100 at least once) and that means you also are in need of silvers. Another way for silvers is the floor 1-50 run.

Whoever repeats 1-50 for exp had got it all wrong and must move to 51-60 farm.

Anyway, the BEST option is always ask your FC to help you. Advice good for all and everything existing in this game.

Edit: summary:
Floor 1-50:
- needed the first time, to unlock floors 51-100
- silvers needed to reach +30-ish weapon/armor to farm decently the floors 51-60

Floor 51-60:
- needed for exp farm OR silver farms

Floors 61-100:
- needed once for unlock Kinna weapon
- possibly better hoard grades there