I actually find healing, ESPECIALLY in FFXIV, to be easier than DPS. Something about healing just clicks in my brain, and it just makes sense. someone dies to avoidable damage? i can safely ignore their complaints, not my fault or responsibility. If someone's being a pain in the ass and not clicking their defensives, at a certain point, it's not my job to save them. I'm a 2k healer in WoW and I've healed mythic raids, and I don't worry about the floor eaters. It's not my fault if the DPS die to their own stupidity, and if I can't save them, I don't bother. I also don't have a res that works in battle, that's a mostly DPS and tank feature in WoW these days (unless I'm a resto druid, which I never am. Sorry!). So if you die to smth stupid, I get to leave you there and focus on the other people.
The thing is, in WoW Rn, a bunch of healers are complaining about a mechanic that is super easy to deal with. You can dispel it with a mass dispel, which only 2 healing classes have, or you can just burst-heal through it (and it doesn't stack with incoming damage, so if it happens during an AOE where you have to heal anyway, the affix removes itself). They're talking about how impossible the affix is to deal with, but you look at their keys done and the most they've cleared is a +5. And like, I handle that in 2 GCDs....