I don't put rescue on my hotbar when I'm healing cause healing is my weakest role, there's boss mechanics & the whole party's health I gotta worry bout & I don't want the added stress of pylling people out of aoes. I figured I'd just heal someone up if they don't move in time out of an aoe.

But I am very thankful when a healer uses it on me, from my own personal experience it's saved my butt many times when I didn't know any better.