Why do casuals act as if it's the end of the world when suggesting?

[Ronduwil]

My brother in Hydaelyn all I want is a couple buttons to break up the tedium of spamming a single dps spell on healers.

If you're doing this, then you're playing wrong. Healing is the one role where I've leveled all jobs to 90, and I've spent plenty of time in the roulettes with them. The only class that plays the way you described is White Mage at level 50. Above that, however, you should be managing your lilies, pre-emptively throwing up an asylum before big AoE burst damage, and possibly maintaining a Medica II to mitigate incoming damage. On top of that you have various cooldowns that you can rotate to keep everyone healthy. It's not the game's fault that you choose to run excusively with pre-made groups of players who don't need any healing and/or that you're so fixated on damage that you're willing to leave all the healing duties to the other guy who is frantically scrambling to maintain everyone while you enjoy your one button spam.

Every other job is even more complex than that. When I'm playing Astrologian, in particular, I'm so busy throwing out the right cards to the right players and redrawing to optimize my Astrodyne's effect that I barely have time to maintain my dot and/or throw out heals. If you find healing boring, then either you're not doing your job or you're running exclusively with well-geared, well-versed players who could probably clear most instances without a healer.