You are a healer, your job is to heal. Everything else is just gravy and cherry on top. You main top priority is to keep everyone HP on check, takes care of status removal, DPS is the lowest in the totem pole and the least of your problem. When your healer has to DPS to help the DPS check, guess what??? You have a bunch of DPS who have no idea on how to do their rotation... and just pew pew or die.