This is mainly my experiences lately with FFXIV but it's certainly not exclusive to there, I'm just getting the overbearing impression from others that if you aren't playing your class in a very prescriptivist way and maximizing your efficiency you're viewed as a drag on any party activity and it saps all the fun out of it and becomes increasingly off-putting to deal with other players and the game(s) as a whole for it.
I should probably just take a break from MMOs in general.
