Ask producer Yoshida.

One reason that was stated is that it creates a divide between players (as can be seen in WoW where very geared players look down on gearing players when they grind their daily valor through the dungeon finder).

If you want anything further than that, you should perhaps invest your energies into organizing a petition for producer Yoshida to explain it further, or simply to petition to have the caps and lockouts changed.

In other words, no more "discussion" where people of opposite opinion exchange ideas, but rather simply a "petition" where only people who agree get together to show how strong that feeling is among the player community.