Curses; which to use? (Warlock)

I was just curious for PvP should I even bother with Agony? It doesn’t do too much dmg. I was thinking elements would be better on a kill target. For casters and healers tongues would be best id like to think. Exhaustion if I needed to kite or was being kited. I’m sure some cases agony would be good like maybe on a rogue or Druid trying to get away to restealth.

Also, immolate….should I bother? Trying to clear up my keybinds with abilities I may not use too and out them on my secondary tabs.

Any opinions/advice?

If you’re an Affliction Warlock then Agony or Exhaustion if it’s a Melee.

Fire Lock? Curse of Elements.

Oh yes I just looked up Elements. I didn’t realize it’s only fire and frost dmg. I thought it was all spell dmg.

100% use CoT on any caster shaman.