Charmed, Season 7

Piper:
I'm not doing this anymore. I give up. I quit.

Angel of Death:
You can't quit, Piper. Not until you catch up.

Piper:
You can't make me take my sister's soul. I won't do it.

Angel of Death:
We don't get to decide who lives or dies. Any circumstances can change someone's fate

Piper:
Well, then, I won't collect anymore souls. I'll go on strike.

Angel of Death:
So, to save your sister you would threaten to stop all death.

Piper:
You got it.

Angel of Death:
That's rather selfish of you, don't you think? Unless, of course, you think that death is pointless.

Piper:
Well, I...

Angel of Death:
It's not, you know. Far from it. Life only has meaning specifically because there is an end. Death is what forces people to live.

Piper:
Yes, but...

Angel of Death:
Which means ending death effectively ends life, throws off the entire cosmic design, the whole point, and for what? A single fleeting life. This is bigger than your sister, Piper. Much bigger.