Is there any way to play the game as DPS? Or just end subscription?

[Ryuukishi]

DRK and Astrologian won't alter the reasons why people don't like the responsibility of playing the tank or healer.

This. I play DPS because I play this game to relax and have fun, and I don't want to deal with the pressure of the whole group wiping because I made a mistake or didn't know exactly what to do in advance. There could be 1000 choices for tank jobs; it's not relevant.