Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - Help/Tips/Tricks Backstab vs abilities

I'm re-rolling an assassin right now and it got me thinking, when is it more preferable to backstab vs using normal damaging abilities with my daggers?

I'm playing with an elf so basically I have:
Flesh sacrifice
Adrenaline
Throwing knife
Backlash
Flurry

Thanks