"Selfish, Aziraphale. Selfish and arrogant. Don't you know pride is a Deadly Sin?"

Because if it isn't about what Crowley wants when this is about Crowley, than it's what Aziraphale wants. It's about Aziraphale thinking that he knows what's best for the other, without taking into account what he has to say on the matter. Like Crowley is a child who needs an adult to take care of his bullies on the playground, like he isn't capable of solving his own problems or can't be trusted to seek help when he requires it.

"And you and I both know that your blade can't kill me. So if you don't mind, this whole song and dance is starting to get a little old."