What are the most common reasons people don't dps?

[Cynfael]

The actual sentence Yoshida had about healer DPS was more along the lines of the fight are balance without healer DPS in mind but they're supposed to be cleared with a certain Ilv, so if you're undergeared you will need healer DPS.
That mean we could as well turn this whole conversation the other way and say that healer DPS can ben compensated by outgearing content. And at this point Healer DPS is a clear bonus for a quicker kill or in case mistakes happens. I don't think it's particulary unsane, healer role is also about covering up mistakes when it's possible.

Following that sort of reasoning, playing skillfully is a “bonus” that isn’t strictly required to clear the vast majority of the game’s content. While this happens to be true, it’s a sad way to look at things.