When is it appropriate to use hazard lights (flashers)?

I thinks it’s imperative that drivers signal their intent (sudden stops, changing lanes, etc.) to other drivers; I’m fanatical about using turn signals whenever I change direction of my car.

I’m not certain though when it’s appropriate to use hazard lights. I’ve developed a habit of using flashers whenever I see unsafe conditions on the road ahead (people in the street, illegal u-turn attempts, unexpectedly stopped vehicles, ice, etc.), however I notice this often has the opposite effect of prompting drivers behind me to attempt accelerating around me toward whatever unsafe condition is ahead.

Should I stop this practice?