Healing word is nice, but at the level most PCs cast it, it only gives the target enough HP to survive 1 hit and assumes that caster can see the target. As a DM it's not my goal to kill off PCs, it's my goal to challenge the players and keep the PCs on their toes. Healing word does a lot of work to keep the person playing the cleric engaged and feeling like they're doing something other than being a healing bot.
Almost having a TPK is far more enjoyable for every group I've ever DMed than actually having a TPK.
Almost having a TPK is far more enjoyable for every group I've ever DMed than actually having a TPK.