Then stop playing with bad players. Outside of using it to throw mobs over edges, which you might as well just leave to the CW(s), it should never be on your bar. My typical encounter loadout while grouped is Astral Shield, Divine Glow and Break the Spirit. At times Searing Light, Forgemaster's Flame, Bastion or Exaltation…
Healing Word is useless later on, I feel the same about Bastion of Health but some people like it. Exaltation is amazing for a clutch heal but I pretty much never use it (unless the people you're playing with are absolute garbage, which about 98% of the randoms I've ran into so far are, you won't need to throw out a huge…
It'd be a lot better if the people joining it actually new what they were doing. Watching everyone rush home node at the start is disheartening, watching one player try to be Rambo and getting murdered by the other team then blaming me for it (apparently I'm supposed to perform miracles on my cleric) does not impress me…