Why Avoid Parry?

[Lan_Mantear]

Actually, a tank's job is 3-fold:
1. Keep hate.
2. Survive by using CDs when needed.
3. Contribute to party damage.

Likewise, a healer's job is 3-fold:
1. Heal the party, especially the tank.
2. Contribute to party damage.
3. Don't overheal.

While I agree with your opinion. It is just that, opinion. At their core, at tank's job is to hold hate. A healer's job is to heal, and a DPS's job is to do damage. Everything else beyond that is icing and is part of what defines a mediocre player vs an exceptional player.

So long as player is doing their role's core function. They are not technically playing incorrectly. They are just being mediocre. It can be a struggle, but even mediocre players can clear content.