After sleeping on it, and re-reading my post, it certainly comes off as bitching about wanting a fucking cookie. However, that was not my intention.
Mryd said it well, that it's just fucking stressful as fuck, and if you fuck up, the group wipes, and it fucking sucks. Most of the PuGs I've been in don't even blame me, and even last night, the group that was frustrating said better to learn the mechanics now than on higher M+ levels. They were cool, but it still sucked ass being so stressed out in which I always felt was a relaxing environment. I mentioned this to a guildy last night, that the higher the M+, it doesn't get more stressful for a DPS, because they just keep doing the same rotation and pumping out higher and higher DPS. The "don't stand in shit" mechanic doesn't change.
I feel the higher the level goes on Mythics, the more stressful it gets for a Healer, and I feel there is a disparity there. That difference was just getting to me enough last night that I decided to bitch about it.