As a tank main, I used to not like the idea of positionals.

But I mean, when you're playing a DPS, you're not doing tank things and a lot of things have been stripped away (like keep-up buffs), to the point where doing positionals is easier to focus on, and even desired because of how boring farming expert gets on the simpler rotations like tanks, healers and ranged DPS.

It's just a little thing to make you feel like you played well. If there's no difference between trying and not trying then everyone will be playing the game blindfolded because of how you can do your rotation without thinking or concentrating. The result is you just get hit by simple mechanics, not because you can't do them, but because you fell half-asleep doing your rotation.