Because I want to heal, but on the off chance there's nothing that needs healing, as it is now I'm stuck pressing my 1 key over and over until I fall asleep.
This happens very often, because all it takes are tanks and DPS that know the mechanics.
Or even not. Bosses like Gurfurlur in Worqor Zormor have so many drawn out AOE telegraphs that you're waiting a good 20 seconds between anything that isn't an autoattack from the boss.
